Prosecution Insights
Last updated: October 02, 2026
Application No. 16/839,174

CLEAN-IN-PLACE USING ULTRASOFT WATER

Non-Final OA §112
Filed
Apr 03, 2020
Priority
Apr 05, 2019 — provisional 62/830,232
Examiner
KEYWORTH, PETER
Art Unit
1777
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Ecolab USA Inc.
OA Round
7 (Non-Final)
58%
Grant Probability
Moderate
7-8
OA Rounds
0m
Est. Remaining
82%
With Interview

Examiner Intelligence

Grants 58% of resolved cases
58%
Career Allowance Rate
463 granted / 794 resolved
-6.7% vs TC avg
Strong +24% interview lift
Without
With
+23.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 6m
Avg Prosecution
41 currently pending
Career history
836
Total Applications
across all art units

Statute-Specific Performance

§101
1.1%
-38.9% vs TC avg
§103
53.0%
+13.0% vs TC avg
§102
13.2%
-26.8% vs TC avg
§112
29.4%
-10.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 794 resolved cases

Office Action

§112
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 15-16 and 24 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. Claim 15 recites “a heat exchanger” but the claim upon which it depends already recites “a heat exchanger.” As such, it is unclear if the two “a heat exchanger” terms are referring the same or different elements. Claim 16 recites “a plant that processes a mammalian-consumable food or beverage” but the claim upon which it depends already recites “a plant that processes a mammalian-consumable food or beverage.” As such, it is unclear if the two “a plant that processes a mammalian-consumable food or beverage” terms are referring the same or different elements. Claim 24 recites “a heat exchanger” but the claim upon which it depends already recites “a heat exchanger.” As such, it is unclear if the two “a heat exchanger” terms are referring the same or different elements. Claim 24 recites “a thermally degraded rendering of a product produced using the heat exchanger” but the claim upon which it depends already recites “a thermally degraded rendering of a product produced using the heat exchanger.” As such, it is unclear if the two “a thermally degraded rendering of a product produced using the heat exchanger” terms are referring the same or different elements. The following is a quotation of 35 U.S.C. 112(d): (d) REFERENCE IN DEPENDENT FORMS.—Subject to subsection (e), a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. The following is a quotation of pre-AIA 35 U.S.C. 112, fourth paragraph: Subject to the following paragraph [i.e., the fifth paragraph of pre-AIA 35 U.S.C. 112], a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. Claims 15-16 and 24 are rejected under 35 U.S.C. 112(d) or pre-AIA 35 U.S.C. 112, 4th paragraph, as being of improper dependent form for failing to further limit the subject matter of the claim upon which it depends, or for failing to include all the limitations of the claim upon which it depends. Claim 15 recites that the industrial equipment comprises industrial equipment selected from the group consisting of a tank, a pipe, a filter, a valve, a heat exchanger and combinations thereof. However, claim 1 recites that the industrial equipment comprises a heat exchanger. As such, claim 15 broadens the scope of what the industrial equipment can be thus failing to include all the limitations of the claim upon which it depends. Claim 16 recites that the industrial equipment is part of a plant that processes a mammalian-consumable food or beverage. However, claim 1 already includes said limitation thereby making claim 16 fail to further limit the subject matter of the claim upon which it depends. Claim 24 recites the industrial equipment comprises a heat exchanger; and flushing the industrial equipment with the pre-rinse fluid and flushing the industrial equipment with the cleaning fluid comprises removing a thermally degraded rendering of a product produced using the heat exchanger. However, claim 1 already includes said limitation thereby making claim 16 fail to further limit the subject matter of the claim upon which it depends. Applicant may cancel the claim(s), amend the claim(s) to place the claim(s) in proper dependent form, rewrite the claim(s) in independent form, or present a sufficient showing that the dependent claim(s) complies with the statutory requirements. Allowable Subject Matter Claims 1-10, 13-14, and 25-26 are allowed. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to PETER KEYWORTH whose telephone number is (571)270-3479. The examiner can normally be reached 9-5 MT (11-7 ET). 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, Jennifer Dieterle can be reached at (571) 270-7872. 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. /PETER KEYWORTH/Primary Examiner, Art Unit 1776
Read full office action

Prosecution Timeline

Show 12 earlier events
Apr 29, 2025
Non-Final Rejection mailed — §112
Aug 28, 2025
Applicant Interview (Telephonic)
Aug 28, 2025
Examiner Interview Summary
Sep 29, 2025
Response Filed
Jan 02, 2026
Final Rejection mailed — §112
Jul 02, 2026
Request for Continued Examination
Jul 03, 2026
Response after Non-Final Action
Sep 02, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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METHOD AND APPARATUS FOR WATER PROCESSING
4y 0m to grant Granted Sep 29, 2026
Patent 12747171
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3y 6m to grant Granted Sep 29, 2026
Patent 12741286
METHOD AND APPARATUS FOR SEPARATING VALUABLE MINERALS FROM ORE
3y 3m to grant Granted Sep 22, 2026
Patent 12735335
Systems and Methods for Ion Exchange
3y 6m to grant Granted Sep 15, 2026
Patent 12729142
FLOCULANT FORMULATION BASED ON CHITOSAN COMPATIBLE WITH DISINFECTION PRODUCTS AND METHOD OF PREPARATION
3y 10m to grant Granted Sep 08, 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
58%
Grant Probability
82%
With Interview (+23.9%)
3y 6m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 794 resolved cases by this examiner. Grant probability derived from career allowance rate.

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