Prosecution Insights
Last updated: October 02, 2026
Application No. 18/797,376

GALVANIZED METAL CORROSION INHIBITOR COMPOSITIONS AND METHODS OF USE

Non-Final OA §103
Filed
Aug 07, 2024
Priority
Mar 27, 2020 — provisional 63/000,659 +1 more
Examiner
COHEN, STEFANIE J
Art Unit
Tech Center
Assignee
Ecolab USA Inc.
OA Round
1 (Non-Final)
75%
Grant Probability
Favorable
1-2
OA Rounds
8m
Est. Remaining
78%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allowance Rate
740 granted / 981 resolved
+15.4% vs TC avg
Minimal +2% lift
Without
With
+2.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
41 currently pending
Career history
999
Total Applications
across all art units

Statute-Specific Performance

§101
1.6%
-38.4% vs TC avg
§103
59.6%
+19.6% vs TC avg
§102
10.9%
-29.1% vs TC avg
§112
20.0%
-20.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 981 resolved cases

Office Action

§103
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 § 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. Claims 1-3 are rejected under 35 U.S.C. 103 as being unpatentable over Rane et al (US20160348252) in view of Tang et al (US20170181292). Rane, paragraphs 7-13 of the PGPUB, teaches an aqueous system comprising a compound of formula (I), PNG media_image1.png 293 721 media_image1.png Greyscale wherein each X is the same or different, and is selected from the group consisting of hydrogen, C1-C16 alkyl, aryl, C2-C16 alkenyl, C2-C16 alkynyl, heteroaryl, C3-C8 cycloalkyl, benzyl, alkylheteroaryl, halogen, halosubstituted alkyl, amino, aminoalkyl, cyano, alkoxy, hydroxyl, thiol, alkylthio, carbonyl, nitro, phosphoryl, phosphonyl, and sulfonyl; Y is selected from the group consisting of hydroxyl, halogen, oxo, alkoxy, thiol, alkylthio, amino, hydrogen, and aminoalkyl; Z is selected from the group consisting of carbon and nitrogen; R1 is selected from the group consisting of hydrogen, deuterium, C1-C16 alkyl, aryl, C2-C16 alkenyl, C2-C16 alkynyl, heteroaryl, C3-C8 cycloalkyl, benzyl, alkylheteroaryl, halogen, hydroxyl, and carbonyl; R2 are R3 are selected from the group consisting of hydrogen, halogen, hydroxyl, aryl, phenyl, heteroaryl, benzyl, alkylheteroaryl, carbonyl, C2-C16 alkenyl, C2-C16 alkynyl, C3-C5 cycloalkyl, and C1-C16 alkyl; and m is 1, 2, 3, or 4; or Rane, paragraphs 15-19 of the PGPUB, teaches the aqueous system a compound of formula (II), PNG media_image2.png 463 671 media_image2.png Greyscale wherein each of X and Y is the same or different, and is selected from the group consisting of hydrogen, C1-C16 alkyl, aryl, C2-C16 alkenyl, C2-C16 alkynyl, heteroaryl, C3-C5 cycloalkyl, benzyl, alkylheteroaryl, halogen, halosubstituted alkyl, amino, aminoalkyl, cyano, alkoxy, hydroxyl, thiol, alkylthio, carbonyl, nitro, phosphoryl, phosphonyl, and sulfonyl; R is selected from the group consisting of hydrogen, deuterium, C1-C16 alkyl, aryl, C2-C16 alkenyl, C2-C16 alkynyl, heteroaryl, C3-C8 cycloalkyl, benzyl, alkylheteroaryl, halogen, hydroxyl, and carbonyl; m is 1, 2, 3, or 4; and n is 1, 2, 3, or 4; or Rane, paragraph 146 of the PGPUB, teaches a compound of formula (I) or (II) can be added to an aqueous system alone or in combination with other corrosion inhibitors or treatment chemicals. The compounds of formulae (I) and (II) also can be added to an aqueous system in combination with a variety of additional additives, such as treatment polymers, anti-microbial agents, anti-scaling agents, colorants, fillers, buffers, surfactants, viscosity modifiers, chelating agents, dispersants, deodorants, masking agents, oxygen scavengers, and indicator dyes. Although Rane teaches chelating agents, Rane does not teach specific chelating agents. Tang, paragraph 51 of the PGPUB, teaches a continuous and substantially uniform organic film on nickel or nickel alloy surfaces. The film has good anticorrosion properties and thermal stability and retains solderability of nickel and nickel alloy surfaces even after multiple heat cycles. Tang, paragraph 47 of the PGPUB, teaches complexing or chelating agents can be included in the composition. Conventional complexing or chelating may be used. Such complexing or chelating agents include, but are not limited to, polyamines. It 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 to incorporate a polyamine as a chelating agent as taught by Tang as the additional additive as taught by Rane as polyamines are a common chelating agent used in corrosion inhibiting compositions. Regarding claim 2, Rane teaches X and R1 are both a hydrogen as claimed in claim 2. Regarding claim 3, Rane, paragraph 79 of the PGPUB, teaches the compound of formula (I) is PNG media_image3.png 250 453 media_image3.png Greyscale Claim 4 is rejected under 35 U.S.C. 103 as being unpatentable over Rane et al (US20160348252) in view of Tang et al (US20170181292) as applied to claim 1 and further in view of Sotoudeh et al (20100178197). Although the references teach polyamines, the references do not teach specific polyamines. Sotoudeh, paragraph 14 of the PGPUB, teaches a synergistic blend and preferably comprises from about 0 to about 10 weight percent of a first compound and from about 10 to about 90 weight percent of a second compound. The first compound is of the formula [R]2N—R1X-N[R]2 and the second compound being at least one benzotriazole. Sotoudeh, paragraph 53 of the PGPUB, teaches the composition of White Rust Reducer 1 was a mixture of 6.25 weight percent polyoxy(methyl) 1.2, ethandiy, alpha-(2-aminomethyl(ethyl)-omega-(2-amino methyl ethoxy) (CAS #9046-10-0) functionalized with 1.2 propanediol, 3-chloro (CAS #96-24-2) and 56.25 weight per cent tolyltriazole. Sotoudeh, paragraph 53 of the PGPUB, teaches “Benzotriazoles' as used herein refers to a class of compounds having the benzotriazole skeleton. It 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 to incorporate a mixture of 6.25 weight percent polyoxy(methyl) 1.2, ethandiy, alpha-(2-aminomethyl(ethyl)-omega-(2-amino methyl ethoxy) (CAS #9046-10-0) functionalized with 1.2 propanediol, 3-chloro (CAS #96-24-2) as taught by Sotoudeh into the composition as taught by the references above as this is one common polyamine used in the corrosion inhibiting compositions to reduce white rust. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. US5198482 teaches corrosion inhibiting coating compositions. Any inquiry concerning this communication or earlier communications from the examiner should be directed to STEFANIE J COHEN whose telephone number is (571)270-5836. The examiner can normally be reached 10am- 6pm M-F. 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, Coris Fung can be reached at (571) 270-5713. 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. /STEFANIE J COHEN/Examiner, Art Unit 1732 8/13/26
Read full office action

Prosecution Timeline

Aug 07, 2024
Application Filed
Aug 17, 2026
Non-Final Rejection mailed — §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

1-2
Expected OA Rounds
75%
Grant Probability
78%
With Interview (+2.5%)
2y 9m (~8m remaining)
Median Time to Grant
Low
PTA Risk
Based on 981 resolved cases by this examiner. Grant probability derived from career allowance rate.

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