Prosecution Insights
Last updated: April 19, 2026
Application No. 18/588,437

METHOD FOR SELECTING CHEMICAL AGENTS FOR REMOVING SCALE

Non-Final OA §112
Filed
Feb 27, 2024
Examiner
KO, JASON Y
Art Unit
1711
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Fuji Electric Co. Ltd.
OA Round
1 (Non-Final)
75%
Grant Probability
Favorable
1-2
OA Rounds
2y 10m
To Grant
92%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allow Rate
806 granted / 1073 resolved
+10.1% vs TC avg
Strong +17% interview lift
Without
With
+16.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
21 currently pending
Career history
1094
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
43.8%
+3.8% vs TC avg
§102
24.5%
-15.5% vs TC avg
§112
22.2%
-17.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1073 resolved cases

Office Action

§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 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 1-7 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. Re Claim 1, it is unclear what the metes and bounds of “an intrinsic physical property” is as this could be basically any property. It is also unclear what “based on a Hansen solubility parameter” means as based on is extremely broad. Claims 2-7 are rejected as they depend from Claim 1 without curing the deficiency. Re Claims 2-4, the “when…” language makes unclear whether these are positively claimed elements, as they don’t have to be triggered. Similarly, it is unclear whether “represented” and “referred to” add anything to the claim. Re Claims 5 and 7, it is unclear what the metes and bounds of “substantially simultaneously” means. Re Claims 1-7, it is also unclear whether a 35 USC 101 rejection should be made (because it is unclear what is being claimed, the determination has not been made), because measuring (or obtaining which is even broader) and selecting, and even “applying” doesn’t seem to impart any (transformative) steps that are considered patentable classes. Further examination on the merits is precluded in light of the unascertainable claim scope. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to JASON Y KO whose telephone number is (571)270-7451. The examiner can normally be reached M-F: 9:00-6:00. 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, Michael Barr can be reached at 571-270-1414. 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. JASON Y. KO Primary Examiner Art Unit 1711 /JASON Y KO/Primary Examiner, Art Unit 1711
Read full office action

Prosecution Timeline

Feb 27, 2024
Application Filed
Feb 01, 2026
Non-Final Rejection — §112 (current)

Precedent Cases

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2y 5m to grant Granted Mar 24, 2026
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
75%
Grant Probability
92%
With Interview (+16.8%)
2y 10m
Median Time to Grant
Low
PTA Risk
Based on 1073 resolved cases by this examiner. Grant probability derived from career allow rate.

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