Prosecution Insights
Last updated: October 01, 2026
Application No. 18/684,096

HYDROGEN STORAGE ALLOY

Non-Final OA §103
Filed
Feb 15, 2024
Priority
Oct 22, 2021 — JP 2021-173471 +1 more
Examiner
LIANG, ANTHONY M
Art Unit
Tech Center
Assignee
Mitsui Mining & Smelting Co., Ltd.
OA Round
1 (Non-Final)
84%
Grant Probability
Favorable
1-2
OA Rounds
4m
Est. Remaining
93%
With Interview

Examiner Intelligence

Grants 84% — above average
84%
Career Allowance Rate
571 granted / 684 resolved
+23.5% vs TC avg
Moderate +10% lift
Without
With
+9.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
40 currently pending
Career history
711
Total Applications
across all art units

Statute-Specific Performance

§101
0.9%
-39.1% vs TC avg
§103
45.2%
+5.2% vs TC avg
§102
7.4%
-32.6% vs TC avg
§112
32.5%
-7.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 684 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 Objections Claims 1 and 5 are objected to because of the following informalities: In claim 1, line 1, “(Mm represents a misch metal)” should read –, wherein Mm represents a misch metal–. In claim 1, line 2, “main phase” should read –main phase–. In claim 1, line 7, “H (GPa)” should read –H, in GPa, –. In claim 1, line 7, “E (GPa)” should read –E, in GPa, –. In claim 5, line 1, “whereina” should read –wherein a–. Appropriate correction is required. 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. 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) 1-5 is/are rejected under 35 U.S.C. 103 as being unpatentable over Miyanohara et al. (US 2019/0348671), as cited in the IDS dated 2/15/2024, hereinafter “Miyanohara.” Regarding claims 1-5, Miyanohara teaches a hydrogen storage alloy comprising Mm, Ni, and Al and having a main phase that has a CaCu5-type crystal structure, wherein La account for 60-100% by mass of the Mm, wherein Ce may be contained in addition to La, the hydrogen storage alloy represented by a general formula: MmNiaMnbAlc, wherein 3.8≤a≤4.7, 0.1≤b≤0.6, and 0.1≤c≤0.6 (Abstract, [0022]-[0025], [0029]-[0032], which overlaps with the composition ranges recited in claims 1 and 4. In the case where the claimed ranges “overlap or lie inside ranges disclosed by prior art” a prima facie case of obviousness exists. See MPEP §2144.05. Miyanohara does not explicitly teach wherein a ratio H/E is 0.08-0.15, wherein the hardness H is 1-11 GPa, wherein a ratio of c-axis length to a-axis length of the CaCu5 crystal structure is 0.8080-0.8110, and wherein a ratio of an area of a segregated phase to an area of a cross section of the hydrogen storage alloy is 0.01% or more and 1.60% or less, the cross section of the hydrogen storage alloy being observed using a scanning electron microscope. However, Miyano teaches a hydrogen storage alloy having an overlapping composition, which is made by a process comprising melting the hydrogen storage alloy raw materials, for example, using a high-frequency heating melting furnace by induction heating to form a molten material, pouring the molten metal into a mold, for example, a water-cooled-type mold, casting the molten metal at a cast molten metal temperature of, for example 1350-1550⁰C, subjecting the cast metal to a heat treatment, wherein the atmosphere is preferably inert gas, such as R and N2, the temperature is 900-1100⁰C, and the duration is 1-10 hours, followed by pulverizing the heat-treated cast metal to a particle size capable of passing through 500 µm sieve mesh, 1000 µm sieve mesh, or 850 µm sieve mesh. Note that the process of manufacture of Miyanohara is substantially similar to that of the instant invention as described in paragraphs [0033]-[0036] of the instant specification. Thus, as Miyanohara teaches a hydrogen storage alloy having an overlapping composition and a substantially similar process of manufacture, one of ordinary skill in the art would expect the hydrogen storage alloy of Miyanohara to have wherein a ratio H/E is 0.08-0.15, wherein the hardness H is 1-11 GPa, wherein a ratio of c-axis length to a-axis length of the CaCu5 crystal structure is 0.8080-0.8110, and wherein a ratio of an area of a segregated phase to an area of a cross section of the hydrogen storage alloy is 0.01% or more and 1.60% or less, the cross section of the hydrogen storage alloy being observed using a scanning electron microscope. In the case where “the claimed and prior art products are identical or substantially identical in structure or composition, or are produced by identical or substantially identical processes, a prima facie case of either anticipation or obviousness has been established.” See MPEP §2112.01. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ANTHONY M LIANG whose telephone number is (571)272-0483. The examiner can normally be reached M-F: 9:00am-5:00pm. 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. /ANTHONY M LIANG/Primary Examiner, Art Unit 1734
Read full office action

Prosecution Timeline

Feb 15, 2024
Application Filed
Aug 26, 2026
Non-Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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COPPER-TIN-NICKEL BRAZING MATERIAL PREPARED BY ALLOYS RECYCLED FROM E-WASTE, PREPARATION METHOD THEREFOR AND SYSTEM THEREOF
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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
84%
Grant Probability
93%
With Interview (+9.5%)
2y 11m (~4m remaining)
Median Time to Grant
Low
PTA Risk
Based on 684 resolved cases by this examiner. Grant probability derived from career allowance rate.

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