Prosecution Insights
Last updated: September 18, 2026
Application No. 19/243,942

CARBON BLACK PELLETS CONTAINING GRAPHENE

Final Rejection §102§103
Filed
Jun 20, 2025
Priority
Jun 20, 2024 — provisional 63/661,948
Examiner
ABU ALI, SHUANGYI
Art Unit
1731
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Continental Carbon Co.
OA Round
4 (Final)
45%
Grant Probability
Moderate
5-6
OA Rounds
2y 10m
Est. Remaining
83%
With Interview

Examiner Intelligence

Grants 45% of resolved cases
45%
Career Allowance Rate
485 granted / 1071 resolved
-19.7% vs TC avg
Strong +38% interview lift
Without
With
+37.8%
Interview Lift
resolved cases with interview
Typical timeline
4y 1m
Avg Prosecution
50 currently pending
Career history
1126
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
56.1%
+16.1% vs TC avg
§102
12.8%
-27.2% vs TC avg
§112
20.3%
-19.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1071 resolved cases

Office Action

§102 §103
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 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 (i.e., changing from AIA to pre-AIA ) 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 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. Claim(s) 1-3 is/are rejected under 35 U.S.C. 102 (a)(1) as being anticipated by WO2022125675A1 (WO’675). Regarding claim 1, WO’675 discloses a wet co-pellet of silicon-treated carbon black and at least one additional filler. A blend of silicon-treated carbon black and at least one additional filler can be pelletized. The at least one additional filler can be graphene. See [0051-0052] and [0057]. The carbon black can be a furnace black, a gas black, a thermal black, an acetylene black, or a lamp black, a plasma black, a recovered carbon black (e.g., as defined in ASTM D8178-19), or a carbon product containing silicon-containing species, and/or metal containing species and the like. See [0068]. Regarding claims 2-3, WO’675 discloses that the at least one additional filler can be present in an amount of from 1% to 5% by weight. See [0060]. Claim Rejections - 35 USC § 103 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 (i.e., changing from AIA to pre-AIA ) 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 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. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. Claim(s) 4- 7is/are rejected under 35 U.S.C. 103 as being unpatentable over WO2022125675A1 (WO’675) as applied to claim 1 above, and further in view of ES2725319A1. WO’675 discloses a wet co-pellet of silicon-treated carbon black and at least one additional filler. A blend of silicon-treated carbon black and at least one additional filler can be pelletized. The at least one additional filler can be graphene. See [0051-0052] and [0057]. The carbon black can be a furnace black, a gas black, a thermal black, an acetylene black, or a lamp black, a plasma black, a recovered carbon black (e.g., as defined in ASTM D8178-19), or a carbon product containing silicon-containing species, and/or metal containing species and the like. See [0068]. But it silent about the graphene characters as applicant set forth in the claims. ES2725319A1 discloses that the graphene materials having an average number of layers between 1 and 30 and a high aspect ratio (100-900000) can provide the following properties: a) Improved impact resistance b) Elongation improvement; c) Improvement of the flow rate. Graphene materials have a very high aspect ratio, because their thickness is very low, being between 0.35 nm. See claim 1 and page 4, lines 10-12. For graphene material having 2 layers, the thickness is about 0.7nm. Thus, it would have been obvious to one of ordinary skill in the art before the effective filling date of the claimed invention to use the graphene having the claimed property motivated by the fact that ES2725319A1 discloses that the use of graphene materials of high aspect ratio (100-900000) and having an average number of layers between 1 and 30, can provide the following properties: a) Improved impact resistance b) Elongation improvement; c) Improvement of the flow rate. Graphene materials have a very high aspect ratio, because their thickness is very low, being between 0.35 nm. See claim 1 and page 4, lines 10-12. Response to Arguments Applicant's arguments filed 04/22/2026 have been fully considered but they are not persuasive. The applicant argues that the present teaching describes only carbon black co-pelletized with graphene. The Examiner respectfully submits that silicon treated carbon is treated carbon black, which is still tread on carbon black. The applicant argues that silica is very difficult to mix in rubber compounds, frequently requiring up to seven passes in a Banbury or mixer. This is compared with three to four for carbon black formulated compounds. To reduce this, special mixers using inter-meshing rotors are needed. It is still less efficient versus all carbon-black filler compounds. The Examiner respectfully submits that the claims are drown to a product and not a process of using it. Furthermore, the Examiner respectfully submits that silicon treated carbon is treated carbon black, which is still tread on carbon black. The applicant argues that ES'319 describes the use of graphene materials as additives in thermoplastics. ES'319 does not describe the use of carbon black. WO'675 and ES'319 together failed to use only carbon black with graphene. The Examiner respectfully submits ES2725319A1 is used to show that the graphene materials having an average number of layers between 1 and 30 and a high aspect ratio (100-900000) can provide the following properties: a) Improved impact resistance b) Elongation improvement; c) Improvement of the flow rate. Graphene materials have a very high aspect ratio, because their thickness is very low, being between 0.35 nm. See claim 1 and page 4, lines 10-12. For graphene material having 2 layers, the thickness is about 0.7nm. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to SHUANGYI ABU ALI whose telephone number is (571)272-6453. The examiner can normally be reached Monday - Friday, 8:00 am- 5:00 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. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Amber Orlando can be reached at (571)270-3149. 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. /SHUANGYI ABU ALI/ Primary Examiner, Art Unit 1731
Read full office action

Prosecution Timeline

Show 2 earlier events
Oct 27, 2025
Non-Final Rejection mailed — §102, §103
Jan 06, 2026
Response Filed
Feb 04, 2026
Final Rejection mailed — §102, §103
Apr 22, 2026
Request for Continued Examination
Apr 23, 2026
Response after Non-Final Action
May 04, 2026
Non-Final Rejection mailed — §102, §103
Jul 31, 2026
Response Filed
Aug 25, 2026
Final Rejection mailed — §102, §103 (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

5-6
Expected OA Rounds
45%
Grant Probability
83%
With Interview (+37.8%)
4y 1m (~2y 10m remaining)
Median Time to Grant
High
PTA Risk
Based on 1071 resolved cases by this examiner. Grant probability derived from career allowance rate.

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