Prosecution Insights
Last updated: April 19, 2026
Application No. 17/804,127

FOAM LAYER WITH THERMAL BARRIER PROPERTIES

Non-Final OA §103§112
Filed
May 26, 2022
Examiner
RIOJA, MELISSA A
Art Unit
1764
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Saint-Gobain
OA Round
7 (Non-Final)
50%
Grant Probability
Moderate
7-8
OA Rounds
3y 4m
To Grant
99%
With Interview

Examiner Intelligence

Grants 50% of resolved cases
50%
Career Allow Rate
421 granted / 847 resolved
-15.3% vs TC avg
Strong +55% interview lift
Without
With
+54.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
74 currently pending
Career history
921
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
42.2%
+2.2% vs TC avg
§102
14.2%
-25.8% vs TC avg
§112
31.2%
-8.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 847 resolved cases

Office Action

§103 §112
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Claim Objections Claims 4, 6, and 12 are objected to because of the following informalities: it is suggested Claims 4 and 16 be amended to recite “magnesium dihydroxide for conciseness, it is suggested Claim 12 be amended to recite “ Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 4, 7, 10, and 16 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claims 4 and 16 set forth the flame retardant filler component comprises a filler selected from the recited species. However, many of the recited species are not encompassed by the possible filler compounds set forth in the independent claims. It is consequently unclear if species recited in the dependent claim are intended to be substitutions for the species set forth in the independent claims or are included in addition to the species set forth in the independent claims. For the purposes of further examination, Claims 4 and 16 will be interpreted as setting forth the flame retardant filler component comprises an alkaline salt selected from magnesium dihydroxide, calcium hydroxide, or a combination thereof and/or the flame retardant filler component further comprises a filler selected from a group consisting of boehmite, huntite, gypsum, hydromagnesite, and any combination thereof. Similarly, Claim 7 sets forth the flame retardant filler component comprises a filler selected from the recited species. However, many of the recited species are not encompassed by the species recited in the independent claim. It is consequently unclear if species recited in the dependent claim are intended to be substitutions for the species set forth in the independent claims or are included in addition to the species set forth in the independent claims. For the purposes of further examination, Claim 7 will be interpreted as setting forth the flame retardant filler component comprises a transition metal oxide selected from iron oxide, titanium oxide, or a combination thereof and/or the flame retardant filler component further comprises a filler selected from a group consisting of iron oxide, titanium oxide, and any combination thereof. Similarly, Claim 10 sets forth the flame retardant filler component comprises a filler selected from the recited species. However, many of the recited species are not encompassed by the species recited in the independent claim. It is consequently unclear if species recited in the dependent claim are intended to be substitutions for the species set forth in the independent claims or are included in addition to the species set forth in the independent claims. For the purposes of further examination, Claim 10 will be interpreted as setting forth the flame retardant filler component comprises wollastonite as a calcium silicate and/or talc as a magnesium silicate and/or the flame retardant filler component further comprises a filler selected from a group consisting of mica, clay, kaolin, and any combination thereof. Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claims 1, 2, 4, 6, 9, 10, and 12 are rejected under 35 U.S.C. 103 as being unpatentable over US 2022/0294044 to Kristy et al. (hereinafter Kristy) in view of CN 109575602 to Guo. For the purposes of examination, citations for Guo are taken from a machine translation of the document obtained from the European Patent Office in June 2024. Regarding Claims 1, 4, 9, 10, and 12. In Example 6, Kristy teaches a foam layer comprising: a silicone based matrix component, e.g. a poly(dialkylsiloxane) [0039]. In Example 6, it is prepared by mixing a Part A and a Part B in a weight ratio of 20:1. Part A comprises roughly 50 weight parts of the silicone-based matrix component vinyl-PDMS, while Part B consists of the silicone-based matrix component silicone hydride ([102] and Table 2). Using these values, the foam layer of Example 6 can be calculated to contain the silicone-based matrix component in an amount of roughly 53 weight percent; and aluminum trihydrate (ATH) (Table 2), corresponding to a flame retardant filler component. Using the values set forth in Table 2, ATH can be calculated to be present in an amount of roughly 10 weight percent in Example 6. The foam layer has a thickness of less than 10 mm [0033]. Kristy does not expressly teach one of the claimed species of flame retardant fillers is included in the composition. However, in the general disclosure, Kristy teaches ATH, magnesium hydroxide, and magnesium carbonate hydroxide pentahydrate are all suitably used as fillers that can participate in formation of a thermal barrier layer and/or absorb water [0047]. Magnesium hydroxide corresponds to an alkaline salt and alkaline salts are set forth as a suitable species of flame retardant filler in instant Claim 1. Magnesium hydroxide is also alternatively known in the art as magnesium dihydroxide. Magnesium carbonate hydroxide pentahydrate corresponds to a metal carbonate. Before the effective filing date of the instantly claimed invention, it would have been obvious to substitute at least a portion of the ATH in Example 6 of Kristy with magnesium hydroxide or magnesium carbonate hydroxide pentahydrate. The motivation would have been that it is obvious to substitute equivalents known for the same purpose. (MPEP 2144.06) Kristy discloses ATH, magnesium dihydroxide, and magnesium carbonate hydroxide pentahydrate are all suitable fillers that can participate in formation of a thermal barrier layer and/or absorb water for use in the disclosed compositions [0047], thus providing evidence of obviousness in substituting one for the other in such compositions. Kristy also does not expressly teach an insulation filler component is further included in the foam layer of Example 6. However, in the disclosure Kristy does teach such fillers, e.g. vermiculite, may be included in the inventive foam layers [0072]. Secondary reference Guo also teaches a method of making a silicone foam in which vermiculite and perlite are provided as thermal insulation fillers in an amount of 1 to 3 parts by weight [0027]. Vermiculite is additionally set forth as a flame retardant filler in independent Claim 1. Kristy and Guo are analogous art as they are from the same field of endeavor, namely silicone foams. Before the effective filing date of the instantly claimed invention, it would have been obvious to a person of ordinary skill in the art to provide vermiculite or perlite in an amount of 1 to 3 parts by weight, as taught by Guo, in the foam layer of Example 6 of Kristy. The motivation would have been that Guo teaches this as a suitable amount of this type of thermal insulation filler in silicone foams. Kristy is silent with respect to the 25% strain compression rating and flammability rating according to ASTM D4986 of the foam layer. However, Kristy, when modified in the manner proposed above, teaches a product prepared from all of the claimed ingredients in the claimed amounts by a substantially similar process. Therefore, the claimed effects and physical properties, i.e. 25% strain compression rating in the claimed range and HBF flammability rating according to ASTM D4986, would implicitly be achieved in a product prepared from all of the claimed ingredients in the claimed amounts by a substantially similar process. See In Re Spada, 911, F.2d 705, 709, 15 USPQ2d 1655, 1658 (Fed. Cir. 1990) and MPEP 2111.01 (I)(II). If it is applicant’s position that this would not be the case: (1) evidence would need to be provided to support the applicant’s position and (2) it would be the Office’s position that the application contains inadequate disclosure as to how to obtain the claimed properties in a product prepared from all of the claimed ingredients in the claimed amounts by a substantially similar process. Regarding Claim 2. Kristy teaches the foam layer of Claim 1 wherein the silicone based matrix component comprises platinum-catalyzed addition cured silicone foam [0063]. Regarding Claim 6. Kristy teaches the foam layer of Claim 1 wherein the catalyst provided in Example 6 is 1,3-divinyl-1,1,3,3-tetramethyldisiloxane platinum (Tables 1 and 2). Claims 13, 14, 16, and 18 are rejected under 35 U.S.C. 103 as being unpatentable over US 2022/0294044 to Kristy et al. (hereinafter Kristy) in view of CN 109575602 to Guo. For the purposes of examination, citations for Guo are taken from a machine translation of the document obtained from the European Patent Office in June 2024. Regarding Claims 13 and 16. In Example 6, Kristy teaches a foam layer comprising: a silicone based matrix component, e.g. a poly(dialkylsiloxane) [0039]. In Example 6, it is prepared by mixing a Part A and a Part B in a weight ratio of 20:1. Part A comprises roughly 50 weight parts of the silicone-based matrix component vinyl-PDMS, while Part B consists of the silicone-based matrix component silicone hydride ([102] and Table 2). Using these values, the foam layer of Example 6 can be calculated to contain the silicone-based matrix component in an amount of roughly 53 weight percent; and aluminum trihydrate (ATH) (Table 2), corresponding to a flame retardant filler component. Using the values set forth in Table 2, ATH can be calculated to be present in an amount of roughly 10 weight percent in Example 6. The foam layer has a thickness of less than 10 mm [0033]. Kristy does not expressly teach one of the claimed species of flame retardant fillers is included in the composition. However, in the general disclosure, Kristy teaches ATH, magnesium hydroxide, and magnesium carbonate hydroxide pentahydrate are all suitably used as fillers that can participate in formation of a thermal barrier layer and/or absorb water [0047]. Magnesium hydroxide corresponds to an alkaline salt and alkaline salts are set forth as a suitable species of flame retardant filler in instant Claim 1. Magnesium hydroxide is also alternatively known in the art as magnesium dihydroxide. Magnesium carbonate hydroxide pentahydrate corresponds to a metal carbonate. Before the effective filing date of the instantly claimed invention, it would have been obvious to substitute at least a portion of the ATH in Example 6 of Kristy with magnesium hydroxide or magnesium carbonate hydroxide pentahydrate. The motivation would have been that it is obvious to substitute equivalents known for the same purpose. (MPEP 2144.06) Kristy discloses ATH, magnesium dihydroxide, and magnesium carbonate hydroxide pentahydrate are all suitable fillers that can participate in formation of a thermal barrier layer and/or absorb water for use in the disclosed compositions [0047], thus providing evidence of obviousness in substituting one for the other in such compositions. Kristy is silent with respect to the 25% strain compression rating and self-ignition time of the foam layer. However, Kristy, when modified in the manner proposed above, teaches a product prepared from all of the claimed ingredients in the claimed amounts by a substantially similar process. Therefore, the claimed effects and physical properties, i.e. 25% strain compression rating and self-ignition time when exposed to a hotplate test at 650°C in the claimed ranges, would implicitly be achieved in a product prepared from all of the claimed ingredients in the claimed amounts by a substantially similar process. See In Re Spada, 911, F.2d 705, 709, 15 USPQ2d 1655, 1658 (Fed. Cir. 1990) and MPEP 2111.01 (I)(II). If it is applicant’s position that this would not be the case: (1) evidence would need to be provided to support the applicant’s position and (2) it would be the Office’s position that the application contains inadequate disclosure as to how to obtain the claimed properties in a product prepared from all of the claimed ingredients in the claimed amounts by a substantially similar process. Regarding Claim 14. Kristy teaches the foam layer of Claim 13 wherein the silicone based matrix component comprises platinum-catalyzed addition cured silicone foam [0063]. Regarding Claim 18. Kristy teaches the foam layer of Claim 13 wherein the catalyst provided in Example 6 is 1,3-divinyl-1,1,3,3-tetramethyldisiloxane platinum (Tables 1 and 2). Claim 19 is rejected under 35 U.S.C. 103 as being unpatentable over US 2022/0294044 to Kristy et al. (hereinafter Kristy) in view of CN 109575602 to Guo. For the purposes of examination, citations for Guo are taken from a machine translation of the document obtained from the European Patent Office in June 2024. Regarding Claim 19. Kristy teaches a composite thermal management sheet comprising a silicone foam layer and a reactive filler composition disposed therein, wherein the second filler forms a thermal barrier layer with a decomposition product of the first filler [0006]. The silicone foam layer of Example 6 specifically comprises: a silicone based matrix component, e.g. a poly(dialkylsiloxane) [0039]. In Example 6, it is prepared by mixing a Part A and a Part B in a weight ratio of 20:1. Part A comprises roughly 50 weight parts of the silicone-based matrix component vinyl-PDMS, while Part B consists of the silicone-based matrix component silicone hydride ([102] and Table 2). Using these values, the foam layer of Example 6 can be calculated to contain the silicone-based matrix component in an amount of roughly 53 weight percent; and aluminum trihydrate (ATH) (Table 2), corresponding to a flame retardant filler component. Using the values set forth in Table 2, ATH can be calculated to be present in an amount of roughly 10 weight percent in Example 6. The foam layer has a thickness of less than 10 mm [0033]. Kristy does not expressly teach one of the claimed species of flame retardant fillers is included in the composition. However, in the general disclosure, Kristy teaches ATH, magnesium hydroxide, and magnesium carbonate hydroxide pentahydrate are all suitably used as fillers that can participate in formation of a thermal barrier layer and/or absorb water [0047]. Magnesium hydroxide corresponds to an alkaline salt and alkaline salts are set forth as a suitable species of flame retardant filler in instant Claim 1. Magnesium hydroxide is also alternatively known in the art as magnesium dihydroxide. Magnesium carbonate hydroxide pentahydrate corresponds to a metal carbonate. Before the effective filing date of the instantly claimed invention, it would have been obvious to substitute at least a portion of the ATH in Example 6 of Kristy with magnesium hydroxide or magnesium carbonate hydroxide pentahydrate. The motivation would have been that it is obvious to substitute equivalents known for the same purpose. (MPEP 2144.06) Kristy discloses ATH, magnesium dihydroxide, and magnesium carbonate hydroxide pentahydrate are all suitable fillers that can participate in formation of a thermal barrier layer and/or absorb water for use in the disclosed compositions [0047], thus providing evidence of obviousness in substituting one for the other in such compositions. Kristy also does not expressly teach an insulation filler component is further included in the foam layer of Example 6. However, in the disclosure Kristy does teach such fillers, e.g. vermiculite, may be included in the inventive foam layers [0072]. Secondary reference Guo also teaches a method of making a silicone foam in which vermiculite and perlite are provided a thermal insulation filler in an amount of 1 to 3 parts by weight [0027]. Before the effective filing date of the instantly claimed invention, it would have been obvious to a person of ordinary skill in the art to provide vermiculite in an amount of 1 to 3 parts by weight, as taught by Guo, in the foam layer of Example 6 of Kristy. The motivation would have been that Guo teaches this to be a suitable amount of this type of thermal insulation filler in silicone foams. Kristy is silent with respect to the 25% strain compression rating and flammability rating according to ASTM D4986 of the thermal barrier composite. However, Kristy, when modified in the manner proposed above, teaches a product prepared from all of the claimed ingredients in the claimed amounts by a substantially similar process. Therefore, the claimed effects and physical properties, i.e. 25% strain compression rating in the claimed range and HBF flammability rating according to ASTM D4986, would implicitly be achieved in a product prepared from all of the claimed ingredients in the claimed amounts by a substantially similar process. See In Re Spada, 911, F.2d 705, 709, 15 USPQ2d 1655, 1658 (Fed. Cir. 1990) and MPEP 2111.01 (I)(II). If it is applicant’s position that this would not be the case: (1) evidence would need to be provided to support the applicant’s position and (2) it would be the Office’s position that the application contains inadequate disclosure as to how to obtain the claimed properties in a product prepared from all of the claimed ingredients in the claimed amounts by a substantially similar process. Claims 1, 2, and 6 – 8 are rejected under 35 U.S.C. 103 as being unpatentable over US 2022/0294044 to Kristy et al. (hereinafter Kristy) in view of US 5,438,081 to Lewis et al. (hereinafter Lewis). Regarding Claims 1, 7, and 8. In Example 6, Kristy teaches a foam layer comprising: a silicone based matrix component, e.g. a poly(dialkylsiloxane) [0039]. In Example 6, it is prepared by mixing a Part A and a Part B in a weight ratio of 20:1. Part A comprises roughly 50 weight parts of the silicone-based matrix component vinyl-PDMS, while Part B consists of the silicone-based matrix component silicone hydride ([102] and Table 2). Using these values, the foam layer of Example 6 can be calculated to contain the silicone-based matrix component in an amount of roughly 53 weight percent. The foam layer has a thickness of less than 10 mm [0033]. Kristy does not expressly teach an insulation filler or one of the claimed species of flame retardant fillers is included in the composition. However, Kristy does teach in the general disclosure that metal oxides and calcium carbonate may be included in the silicone foam layer as additional fillers [0072]. Metal oxide and metal carbonates are both set forth as flame retardant fillers in independent Claim 1. Secondary reference Lewis teaches iron oxide, as well as calcium carbonate, may be provided as fillers in silicone foams in an amount of at least about 2 weight percent and preferably about 20 to 30 weight percent (Column 4, Lines 29 – 33 and Column 5, Lines 13 – 14). Kristy and Lewis are analogous art as they are from the same field of endeavor, namely silicone foams. Before the effective filing date of the instantly claimed invention, it would have been obvious to a person of ordinary skill in the art to further provide iron oxide or calcium carbonate in the foam layer of Example 6 of Kristy in an amount in the preferred range of 20 to 30 weight percent taught by Lewis. As iron oxide and calcium carbonate each correspond to both a flame retardant filler and an insulation filler, inclusion of the either compound in Kristy in the preferred range of Lewis would result in a flame retardant filler being present in an amount of at least 10 weight percent and not greater than 20 weight percent, as well as an insulation filler component in an amount of 1 to 25 weight percent of the foam layer. The motivation would have been that Kristy teaches such fillers provide insulative properties [0072], while Lewis shows discloses this to be a suitable amount of such fillers in silicone foams. Kristy is silent with respect to the 25% strain compression rating and flammability rating according to ASTM D4986 of the foam layer. However, Kristy, when modified in the manner proposed above, teaches a product prepared from all of the claimed ingredients in the claimed amounts by a substantially similar process. Therefore, the claimed effects and physical properties, i.e. 25% strain compression rating in the claimed range and HBF flammability rating according to ASTM D4986, would implicitly be achieved in a product prepared from all of the claimed ingredients in the claimed amounts by a substantially similar process. See In Re Spada, 911, F.2d 705, 709, 15 USPQ2d 1655, 1658 (Fed. Cir. 1990) and MPEP 2111.01 (I)(II). If it is applicant’s position that this would not be the case: (1) evidence would need to be provided to support the applicant’s position and (2) it would be the Office’s position that the application contains inadequate disclosure as to how to obtain the claimed properties in a product prepared from all of the claimed ingredients in the claimed amounts by a substantially similar process. Regarding Claim 2. Kristy teaches the foam layer of Claim 1 wherein the silicone based matrix component comprises platinum-catalyzed addition cured silicone foam [0063]. Regarding Claim 6. Kristy teaches the foam layer of Claim 1 wherein the catalyst provided in Example 6 is 1,3-divinyl-1,1,3,3-tetramethyldisiloxane platinum (Tables 1 and 2). Claims 13, 14, and 18 are rejected under 35 U.S.C. 103 as being unpatentable over US 2022/0294044 to Kristy et al. (hereinafter Kristy) in view of US 5,438,081 to Lewis et al. (hereinafter Lewis). Regarding Claim 13. In Example 6, Kristy teaches a foam layer comprising: a silicone based matrix component, e.g. a poly(dialkylsiloxane) [0039]. In Example 6, it is prepared by mixing a Part A and a Part B in a weight ratio of 20:1. Part A comprises roughly 50 weight parts of the silicone-based matrix component vinyl-PDMS, while Part B consists of the silicone-based matrix component silicone hydride ([102] and Table 2). Using these values, the foam layer of Example 6 can be calculated to contain the silicone-based matrix component in an amount of roughly 53 weight percent. The foam layer has a thickness of less than 10 mm [0033]. Kristy does not expressly teach an insulation filler or one of the claimed species of flame retardant fillers is included in the composition. However, Kristy does teach in the general disclosure that metal oxides and calcium carbonate may be included in the silicone foam layer as additional fillers [0072]. Metal oxide and metal carbonates are both set forth as flame retardant fillers in independent Claim 13. Secondary reference Lewis teaches iron oxide, as well as calcium carbonate, may be provided as fillers in silicone foams in an amount of at least about 2 weight percent and preferably about 20 to 30 weight percent (Column 4, Lines 29 – 33 and Column 5, Lines 13 – 14). Kristy and Lewis are analogous art as they are from the same field of endeavor, namely silicone foams. Before the effective filing date of the instantly claimed invention, it would have been obvious to a person of ordinary skill in the art to further provide iron oxide or calcium carbonate in the foam layer of Example 6 of Kristy in an amount in the preferred range of 20 to 30 weight percent taught by Lewis. As iron oxide and calcium carbonate each correspond to both a flame retardant filler and an insulation filler, inclusion of the either compound in Kristy in the preferred range of Lewis would result in a flame retardant filler being present in an amount of at least 10 weight percent and not greater than 20 weight percent of the foam layer, as well as an insulation filler component in an amount of 1 to 25 weight percent. The motivation would have been that Kristy teaches such fillers provide insulative properties [0072], while Lewis shows discloses this to be a suitable amount of such fillers in silicone foams. Kristy is silent with respect to the 25% strain compression rating and self-ignition time of the foam layer. However, Kristy, when modified in the manner proposed above, teaches a product prepared from all of the claimed ingredients in the claimed amounts by a substantially similar process. Therefore, the claimed effects and physical properties, i.e. 25% strain compression rating and self-ignition time when exposed to a hotplate test at 650°C in the claimed ranges, would implicitly be achieved in a product prepared from all of the claimed ingredients in the claimed amounts by a substantially similar process. See In Re Spada, 911, F.2d 705, 709, 15 USPQ2d 1655, 1658 (Fed. Cir. 1990) and MPEP 2111.01 (I)(II). If it is applicant’s position that this would not be the case: (1) evidence would need to be provided to support the applicant’s position and (2) it would be the Office’s position that the application contains inadequate disclosure as to how to obtain the claimed properties in a product prepared from all of the claimed ingredients in the claimed amounts by a substantially similar process. Regarding Claim 14. Kristy teaches the foam layer of Claim 13 wherein the silicone based matrix component comprises platinum-catalyzed addition cured silicone foam [0063]. Regarding Claim 18. Kristy teaches the foam layer of Claim 13 wherein the catalyst provided in Example 6 is 1,3-divinyl-1,1,3,3-tetramethyldisiloxane platinum (Tables 1 and 2). Claim 19 is rejected under 35 U.S.C. 103 as being unpatentable over US 2022/0294044 to Kristy et al. (hereinafter Kristy) in view of US 5,438,081 to Lewis et al. (hereinafter Lewis). Regarding Claim 19. Kristy teaches a composite thermal management sheet comprising a silicone foam layer and a reactive filler composition disposed therein, wherein the second filler forms a thermal barrier layer with a decomposition product of the first filler [0006]. The silicone foam layer of Example 6 specifically comprises: a silicone based matrix component, e.g. a poly(dialkylsiloxane) [0039]. In Example 6, it is prepared by mixing a Part A and a Part B in a weight ratio of 20:1. Part A comprises roughly 50 weight parts of the silicone-based matrix component vinyl-PDMS, while Part B consists of the silicone-based matrix component silicone hydride ([102] and Table 2). Using these values, the foam layer of Example 6 can be calculated to contain the silicone-based matrix component in an amount of roughly 53 weight percent. The foam layer has a thickness of less than 10 mm [0033]. Kristy does not expressly teach an insulation filler or one of the claimed species of flame retardant fillers is included in the composition. However, Kristy does teach in the general disclosure that metal oxides and calcium carbonate may be included in the silicone foam layer as additional fillers [0072]. Metal oxide and metal carbonates are both set forth as flame retardant fillers in independent Claim 19. Secondary reference Lewis teaches iron oxide, as well as calcium carbonate, may be provided as fillers in silicone foams in an amount of at least about 2 weight percent and preferably about 20 to 30 weight percent (Column 4, Lines 29 – 33 and Column 5, Lines 13 – 14). Kristy and Lewis are analogous art as they are from the same field of endeavor, namely silicone foams. Before the effective filing date of the instantly claimed invention, it would have been obvious to a person of ordinary skill in the art to further provide iron oxide or calcium carbonate in the foam layer of Example 6 of Kristy in an amount in the preferred range of 20 to 30 weight percent taught by Lewis. As iron oxide and calcium carbonate each correspond to both a flame retardant filler and an insulation filler, inclusion of the either compound in Kristy in the preferred range of Lewis would result in a flame retardant filler being present in an amount of at least 10 weight percent and not greater than 20 weight percent, as well as an insulation filler component in an amount of 1 to 25 weight percent of the foam layer. The motivation would have been that Kristy teaches such fillers provide insulative properties [0072], while Lewis shows discloses this to be a suitable amount of such fillers in silicone foams. Kristy is silent with respect to the 25% strain compression rating and flammability rating according to ASTM D4986 of the thermal barrier composite. However, Kristy, when modified in the manner proposed above, teaches a product prepared from all of the claimed ingredients in the claimed amounts by a substantially similar process. Therefore, the claimed effects and physical properties, i.e. 25% strain compression rating in the claimed range and HBF flammability rating according to ASTM D4986, would implicitly be achieved in a product prepared from all of the claimed ingredients in the claimed amounts by a substantially similar process. See In Re Spada, 911, F.2d 705, 709, 15 USPQ2d 1655, 1658 (Fed. Cir. 1990) and MPEP 2111.01 (I)(II). If it is applicant’s position that this would not be the case: (1) evidence would need to be provided to support the applicant’s position and (2) it would be the Office’s position that the application contains inadequate disclosure as to how to obtain the claimed properties in a product prepared from all of the claimed ingredients in the claimed amounts by a substantially similar process. Response to Arguments Applicant's arguments filed November 20, 2025 have been fully considered but they are not persuasive. Applicant argues that the applied references do not teach the claimed weight percentage of flame retardant, wherein the flame retardant comprises a filler selected from the species now set forth in the independent claims. However, it is the Office’s position that US 2022/0294044 to Kristy et al. is still suitably combined with CN 109575602 to Guo or US 5,438,081 to Lewis et al. to render obvious the instant claims as amended, for the reasons detailed in the modified grounds of rejection under 35 U.S.C. 103 set forth above. Correspondence Any inquiry concerning this communication or earlier communications from the examiner should be directed to MELISSA RIOJA whose telephone number is (571)270-3305. The examiner can normally be reached Monday - Friday 10:00 am - 6:30 pm EST. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Arrie Lanee Reuther can be reached at (571)270-7026. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /MELISSA A RIOJA/Primary Examiner, Art Unit 1764
Read full office action

Prosecution Timeline

May 26, 2022
Application Filed
Jul 13, 2023
Non-Final Rejection — §103, §112
Oct 17, 2023
Response Filed
Jan 18, 2024
Final Rejection — §103, §112
Apr 18, 2024
Request for Continued Examination
Apr 21, 2024
Response after Non-Final Action
Jun 06, 2024
Non-Final Rejection — §103, §112
Sep 11, 2024
Response Filed
Oct 18, 2024
Final Rejection — §103, §112
Dec 20, 2024
Response after Non-Final Action
Jan 23, 2025
Request for Continued Examination
Jan 26, 2025
Response after Non-Final Action
Apr 15, 2025
Non-Final Rejection — §103, §112
Jul 18, 2025
Response Filed
Aug 25, 2025
Final Rejection — §103, §112
Nov 20, 2025
Request for Continued Examination
Nov 21, 2025
Response after Non-Final Action
Jan 08, 2026
Non-Final Rejection — §103, §112 (current)

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2y 5m to grant Granted Mar 24, 2026
Patent 12570786
RIGID POLYURETHANE FOAM MADE WITH A HYDROCARBON BLOWING AGENT AND 1,1,1,4,4,4-HEXAFLUOROBUT-2-ENE
2y 5m to grant Granted Mar 10, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

7-8
Expected OA Rounds
50%
Grant Probability
99%
With Interview (+54.8%)
3y 4m
Median Time to Grant
High
PTA Risk
Based on 847 resolved cases by this examiner. Grant probability derived from career allow rate.

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