Prosecution Insights
Last updated: May 04, 2026
Application No. 18/502,493

DISPERSING DEVICE AND PULPING MACHINE

Non-Final OA §102§112
Filed
Nov 06, 2023
Priority
Aug 16, 2022 — CN 202222162265.4 +1 more
Examiner
COOLEY, CHARLES E
Art Unit
1774
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Ongoal Technology Co. Ltd.
OA Round
1 (Non-Final)
79%
Grant Probability
Favorable
1-2
OA Rounds
4m
Est. Remaining
94%
With Interview

Examiner Intelligence

Grants 79% — above average
79%
Career Allowance Rate
1177 granted / 1489 resolved
+14.0% vs TC avg
Moderate +15% lift
Without
With
+14.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
39 currently pending
Career history
1528
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
32.7%
-7.3% vs TC avg
§102
25.0%
-15.0% vs TC avg
§112
31.4%
-8.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1489 resolved cases

Office Action

§102 §112
OFFICE ACTION This application has been assigned or remains assigned to Technology Center 1700, Art Unit 1774 and the following will apply for this application: Please direct all written correspondence with the correct application serial number for this application to Art Unit 1774 . Telephone inquiries regarding this application should be directed to the Electronic Business Center ( EBC ) at http://www.uspto.gov/ebc/index.html or 1-866-217-9197 or to the Examiner at (571) 272-1139. All official facsimiles should be transmitted to the centralized fax receiving number (571)-273-8300. 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. Priority Acknowledgment is made of a claim for foreign priority under 35 U.S.C. § 119(a)-(d). All of the CERTIFIED copies of the priority documents have been received in this national stage application from the International Bureau (PCT Rule 17.2(a)). Information Disclosure Statement Note the attached PTO-1449 forms submitted with the Information Disclosure Statements. Specification The specification has not been checked to the extent necessary to determine the presence of all possible minor errors. Applicant's cooperation is requested in correcting any errors of which applicant may become aware in the specification. The Abstract of the Disclosure is objected to because: a. the recitation of "Disclosed is" in line 1 is an improper implied phrase. Correction is required. See MPEP § 608.01(b). The title is acceptable. Claim Rejections - 35 U.S.C. § 112(b) 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 appl icant regards as his invention. The inquiry during examination is patentability of the invention as the inventor or a joint inventor regards such invention . If the claims do not particularly point out and distinctly claim that which the inventor or a joint inventor regards as his or her invention, the appropriate action by the examiner is to reject the claims under 35 U.S.C. 112(b) or pre-AIA 35 U.S.C. 112, second paragraph. In re Zletz , 893 F.2d 319, 1 3 USPQ2d 1320 (Fed. Cir. 1989). Claims 1-9 are rejected under 35 U.S.C. 112(b) as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor, or for pre-AIA the applicant regards as the invention. NOTE: Per 37 CFR 1.75(c), dependent c laims shall be construed to include all the limitations of the claim incorporated by reference into the dependent claim. Accordingly, by definition, any claims that depend from a claim that is deemed indefinite under 35 USC 112(b) will also be considered indefinite and identified in the list of rejected claims above, even if such claims are themselves free of indefiniteness under § 112(b). Claim 1: The first part of this claim refers to at least two second shear devices (2) and then to the second shear device (2), thereby rendering claim 1 unclear. The last part refers the second shear device (2) whereas in the first part at least two second shear devices (2) are defined, thereby rendering claim 1 unclear. The last part refers to a shear embedded ring (21), then to the shear embedded rings (21), and finally to the shear embedded ring (21) again, thereby rendering claim 1 unclear. Finally, the expression the shear embedded rings (21) of each of the second shear devices (2) are respectively embedded in one of the shear embedded rings (21) (i.e. the rings 21 are embedded in themselves) is contradictory in itself, thereby rendering claim 1 unclear. In lines 8-9, what elements are “ connected in linkage with each other ”? Claim 9, last line: “the seal ring” lacks antecedent basis - see claim 4. Claim Rejections - 35 USC § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The terms used in this respect are given their broadest reasonable interpretation in their ordinary usage in context as they would be understood by one of ordinary skill in the art, in light of the written description in the specification, including the drawings, without reading into the claim any disclosed limitation or particular embodiment. See, e.g., In re Am. Acad. of Sci. Tech. Ctr ., 367 F.3d 1359, 1364 (Fed. Cir. 2004); In re Hyatt , 211 F.3d 1367, 1372 (Fed. Cir. 2000); In re Morris, 127 F.3d 1048, 1054-55 (Fed. Cir. 1997); In re Zletz , 893 F.2d 319, 321-22 (Fed. Cir. 1989). The Examiner interpret s claims as broadly as reasonable in view of the specification, but does not read limitations from the specification into a claim. Elekta Instr. S.A.v.O.U.R . Sci. Int'l, Inc ., 214 F.3d 1302, 1307 (Fed. Cir. 2000). "A claim is anticipated only if each and every element as set forth in the claim is found, either expressly or inherently described, in a single prior art reference." Verdegaal Bros. Inc. v. Union Oil Co. of California , 814 F.2d 628, 631 (Fed. Cir. 1987). The express, implicit, and inherent disclosures of a prior art reference may be relied upon in the rejectio n of claims under 35 U.S.C. 102 or 103. "The inherent teaching of a prior art reference, a question of fact, arises both in the context of anticipation and obviousness." In re Napier , 55 F.3d 610, 613, 34 USPQ2d 1782, 1784 (Fed. Cir. 1995) (affirmed a 35 U.S.C. 103 rejection based in part on inherent disclosure in one of the references). See also In re Grasselli , 713 F.2d 731, 739, 218 USPQ 769, 775 (Fed. Cir. 1983). See MPEP 2112. The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless— (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale or otherwise available to the public before the effective filing date of the claimed invention. Claims 1-9 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by KEEN (US 2673723) that discloses in figures 1, 2 and at column 5, line 66 - column 6, line 60: a dispersing device comprising a first shear device (32, 28) and at least two second shear devices (31+14, 29+14), wherein one of the first shear device and the second shear devices is a shear stator and another one of the first shear device and the second shear devices is a shear rotor, and the first shear device (32, 28) is rotatable relative to the second shear devices (31+14,29+14); wherein the first shear device (32, 28) comprises a shear inner ring (28), a shear outer ring (28) and an annular isolation board (32); the shear inner ring is provided with a plurality of first radial through holes 33 provided at intervals from each other; the shear outer ring is provided to surround outside the shear inner ring, and is provided coaxially with the shear inner ring and connected in linkage with each other; the shear outer ring is provided with a plurality of third radial through holes 33 provided at intervals from each other; the annular isolation board ( proximate 32) is located between the shear inner ring and the shear outer ring, an inner side of the annular isolation board is connected with the shear inner ring, and an outer side of the annular isolation board is connected with the shear outer ring, so that both opposite ends of the annular isolation board form shear receiving grooves (cf. figure 2), respectively; and wherein each of the at least two second shear devices ((31+14, 29+14) has a shear embedded ring (29, 31), the shear embedded rings of each of the second shear devices are respectively embedded in one of the shear receiving grooves (cf. figure 2), and the shear embedded rings are provided with a plurality of second radial through holes provided at intervals from each other (cf. figure 2) ; and seal ring at 32. The additional features of claims 2-9, in combination with the features of independent claim 1, are disclosed (Figures 1, 2; column 5, line 66 - column 6, line 60) ; and shear chamber 27 defining multiple chambers there. Claims 1-9 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by HASSELQUIST (US 26 85436 ) that discloses a dispersing device including the recited shear devices having coaxial and intermeshing stator rings 49 and a rotor including rotor rings 47 mounted on a rotor plate 43 (Figures 2 and 4) ; the rotor rings 47 being rotatable relative to the stator rings 49 ; an annular isolation board 43; radial through holes 51 provided at intervals from each other in the stator rings and the rotor rings; both opposite ends of the annular isolation board form shear receiving grooves ; wherein the first shear device /rotor is an integrally formed structure (Figure 2); the stator rings 49 and the rotor rings 47 are provided at intervals to form gaps; wherein the through holes 51 and the gaps a re communicated in sequence ; wherein an inner side of an inner ring 47 is connected with a seal ring 56 , and an inner hole of the seal ring is configured to sealingly and interlockingly connect a rotation shaft 42; annular carrier plate s 31, 3 4 fixedly connected with the stator rings 49; t he annular carrier plate 31 is configured to connect a machine (Figure 1); wherein the plurality of the first radial through holes 51 are evenly distributed on a side wall of the rings (Figure 3); the radial through hole s 51 are of circular hole structure (Figure 3); a frame (Figure 1) , a rotation shaft 42; the frame has a shear chamber 31-34 defining multiple chambers there (Figures 1-2). Claims 1-9 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by GB 2016939 that discloses a dispersing device including the recited shear devices having stator rings 42, 51, 52 and a rotor including rotor rings 31-35 mounted on a rotor plate 30 ; the rotor rings 31-35 being coaxial with and rotatable relative to the stator rings 42, 51, 52 ; an annular isolation board 26 and/or 27 ; radial through holes 38 and/or 53 provided at intervals from each other in the stator rings and the rotor rings; both opposite ends of the annular isolation board form shear receiving grooves proximate 53 ; wherein the first shear device/rotor is an integrally formed structure (Figure 1 ); the stator rings 42, 51, 52 and the rotor rings 31-35 are provided at intervals to form gaps - Figures 1-2 ; wherein the through holes and the gaps are communicated in sequence - Figure 2 ; wherein an inner side of an inner ring is connected with a seal ring 21 , and an inner hole of the seal ring 21 is configured to sealingly and interlockingly connect a rotation shaft 22 ; annular carrier plates 40, 41 fixedly connected with the stator rings; the annular carrier plate 40 is configured to connect a machine (elements 20 and above - Figure 1); wherein the plurality of the radial through holes 38 and/or 53 are evenly distributed on a side wall of the rings (Figure 2 ); the radial through holes 5 3 are of circular hole structure (Figure 2 ); a frame (Figure 1), a rotation shaft 22 ; the frame has a shear chamber 10 defining multiple chambers there (Figure 1 ). Allowable Subject Matter No claims stand allowed. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. The cited prior art discloses rotor/stator mixers. Any inquiry concerning this communication or earlier communications from the examiner should be directed to FILLIN "Examiner name" \* MERGEFORMAT CHARLES COOLEY whose telephone number is FILLIN "Phone number" \* MERGEFORMAT (571) 272-1139 . The examiner can normally be reached FILLIN "Work Schedule?" \* MERGEFORMAT M-F 9:30 AM - 6:00 PM . 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 . New USPTO policy limits time for interviews to one per new application or RCE (utility), when during prosecution, the examiner conducts an interview. More than one interview and additional time will only be granted if it is ensured “ that the interviews are being used to advance prosecution ” . If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, FILLIN "SPE Name?" \* MERGEFORMAT CLAIRE X. WANG can be reached at FILLIN "SPE Phone?" \* MERGEFORMAT 571-272-1700 . 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. /CHARLES COOLEY/ Examiner, Art Unit 1774 DATED: 24 MAR 2026
Read full office action

Prosecution Timeline

Nov 06, 2023
Application Filed
Mar 24, 2026
Non-Final Rejection — §102, §112 (current)

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
79%
Grant Probability
94%
With Interview (+14.9%)
2y 10m (~4m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1489 resolved cases by this examiner. Grant probability derived from career allowance rate.

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