Prosecution Insights
Last updated: October 04, 2026
Application No. 18/280,526

EMULSION-TYPE EXPLOSIVES OF THE WATER-IN-OIL TYPE

Non-Final OA §103
Filed
Sep 06, 2023
Priority
Mar 08, 2021 — EU 21161190.0 +1 more
Examiner
FELTON, AILEEN BAKER
Art Unit
1734
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Yara International ASA
OA Round
3 (Non-Final)
52%
Grant Probability
Moderate
3-4
OA Rounds
1y 4m
Est. Remaining
68%
With Interview

Examiner Intelligence

Grants 52% of resolved cases
52%
Career Allowance Rate
233 granted / 449 resolved
-13.1% vs TC avg
Strong +16% interview lift
Without
With
+16.5%
Interview Lift
resolved cases with interview
Typical timeline
4y 5m
Avg Prosecution
51 currently pending
Career history
497
Total Applications
across all art units

Statute-Specific Performance

§101
1.0%
-39.0% vs TC avg
§103
64.8%
+24.8% vs TC avg
§102
15.8%
-24.2% vs TC avg
§112
17.0%
-23.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 449 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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission has been entered. 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 1-11, 13-20, and 22-24 are rejected under 35 U.S.C. 103 as being unpatentable over Alilovic (20040065396) in view of CN (106316727) Regarding claims 1-20, 23, and 24, Alilovic discloses an emulsion explosive that includes a discontinuous oxidizer phase from 80-95 % of the total composition and includes ammonium nitrate and calcium nitrate (0064). The calcium nitrate may be from 0-20 % of the oxidizer (0056). The continuous or fuel phase can be from 2-10 % of the total composition (0064) and includes oil such as diesel, corn, soybean and the like (0054) and emulsifier from .5-3 % of the total composition. Water is included from around 10-16 % (see table 1). The Chinese patent discloses the use of hydrogenated castor (ricin) oil from .5-5 % (0019). This percent meets the claimed range since the claim recites 5-20 % of the organic phase of which 50-88 % is the fuel and of that fuel there is 20-100 % of the hydrogenated oil. This calculates to be at a minimum amount of 50 % of the total organic phase is 5 % and 20 % of that fuel component is .5 %. The viscosity will be inherent to the composition since the same ingredients with amounts are used. As to limitations which are considered to be inherent in a reference, note the case law of In re Ludke, 169 USPQ 563; In re Swinehart, 169 USPQ 226, In re Fitzgerald, 205 USPQ 594; In re Best et al, 195 USPQ 430; and In re Brown, 173 USPQ 685, 688. Regarding the term “renewable”, the oils disclosed are inherently renewable. Further, the term “renewable” is a method limitation since it does not describe the compound itself but rather how it is obtained. Regarding claims 21 and 22, the prior art shows different amounts of the ingredients and thus will inherently result in using different amounts that changes the viscosity and stability. Response to Arguments Applicant's arguments have been fully considered but they are not persuasive. Applicant’s arguments with regards to the fuel are moot in light of the new rejection above. Applicant argues that the prior art does not disclose calcium nitrate with ammonium nitrate. This is not the case since the prior art reference clearly discloses the use of 0 to 20% calcium nitrate to replace a portion of the ammonium nitrate oxidizer (0056). Further with respect to claim two, applicant recites the percentages based on the oxidizer alone. The percentages in the prior art are based on the entire composition. When calculated based on just the oxidizer portion of the composition, the prior art meets the limitations of claim two. Applicant argues that the SVO is not disclosed but again the prior art recites that corn or soybean oil may be used as the oil. There is nothing in the prior art to support applicant’s allegations that the emulsion is based only on ammonium nitrate. Applicant provides articles of other patents that only include ammonium nitrate. But the prior art that has been applied in this case clearly recites that calcium nitrate is used to replace a portion of the ammonium nitrate. Since the prior art recites that corn oil or soybean oil can be the oil that is present in the emulsion, the amounts recited as 2 to 10% would be the amount of those oils included in the composition. As outlined above, the prior art does include the same ingredients as that which is claimed. Thus the properties would be inherent as indicated above. Applicant also argues that there are unexpected results based on the addition of calcium nitrate. Clearly the prior art discloses the calcium nitrate to be used. The fact that the inventor has recognized another advantage which would flow naturally from following the suggestion of the prior art cannot be the basis for patentability when the differences would otherwise be obvious. See Ex parte Obiaya, 227 USPQ 58, 60 (Bd. Pat. App. & Inter. 1985). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to AILEEN BAKER FELTON whose telephone number is (571)272-6875. The examiner can normally be reached Monday 9-5:30, Thursday 11-3, Friday 9-5:30. 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, Jonathan Johnson can be reached at 571-272-1177. 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. /AILEEN B FELTON/Primary Examiner, Art Unit 1734
Read full office action

Prosecution Timeline

Sep 06, 2023
Application Filed
Sep 18, 2025
Non-Final Rejection mailed — §103
Feb 12, 2026
Response Filed
Jun 10, 2026
Final Rejection mailed — §103
Sep 09, 2026
Request for Continued Examination
Sep 10, 2026
Response after Non-Final Action
Sep 23, 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

3-4
Expected OA Rounds
52%
Grant Probability
68%
With Interview (+16.5%)
4y 5m (~1y 4m remaining)
Median Time to Grant
High
PTA Risk
Based on 449 resolved cases by this examiner. Grant probability derived from career allowance rate.

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