Prosecution Insights
Last updated: May 29, 2026
Application No. 18/748,963

CRYOPUMPING-RESISTANT LH2 STORAGE VESSEL

Non-Final OA §102§103
Filed
Jun 20, 2024
Priority
Jun 22, 2023 — provisional 63/522,652
Examiner
ELOSHWAY, NIKI MARINA
Art Unit
3736
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Cb&I Sts Delaware LLC
OA Round
1 (Non-Final)
64%
Grant Probability
Moderate
1-2
OA Rounds
9m
Est. Remaining
88%
With Interview

Examiner Intelligence

Grants 64% of resolved cases
64%
Career Allowance Rate
1008 granted / 1585 resolved
-6.4% vs TC avg
Strong +24% interview lift
Without
With
+24.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
46 currently pending
Career history
1652
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
79.4%
+39.4% vs TC avg
§102
11.7%
-28.3% vs TC avg
§112
8.0%
-32.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1585 resolved cases

Office Action

§102 §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 § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claims 1-4, 6 and 8-11 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Umeda et al. (JP 2022103917A). Umeda et al. teaches a liquid gas storage container 1 comprising an inner shell 3 forming a cavity (figure 1), the inner shell 3 disposed on an insulation base at 36, the insulation base at 36 comprising a first insulation sub-layer 36, an outer shell 5forming an insulation volume between the inner shell (figure 1) and the outer shell, a first insulation layer 61 disposed within the insulation volume and around the inner shell 3 and the insulation base (figure 1), and a second insulation layer 62 (figure 2) disposed within the insulation volume between the first insulation layer 61 and the outer shell 5. Regarding claim 2, a skirt disposed along a sidewall of the insulation base (figure 1). Regarding claim 3, the first insulation layer 61 is disposed within the insulation volume and around the skirt (figure 1). Regarding claim 4, comprising one or more anchors 9, 10 mechanically coupled to the skirt (figure 2). Regarding claim 6, the first insulation sub-layer at 31, 36, 35 comprises a load-bearing insulation (capable of bearing a load). Regarding claim 8, an interleaving layer 41 disposed between the first insulation sub-layer 36 and a second insulation sub-layer46, or the first insulation layer and the second insulation layer. Regarding claim 9, a protective layer 31 disposed on the first insulation sub-layer. Regarding claim 10, the second insulation layer 63 comprises a bulk fill material (glass wool and perlite disclosed). Regarding claim 11, the bulk fill material comprises one or more of perlite, glass microspheres, fiberglass, or a mixture thereof (glass wool and perlite disclosed for layer 63). Claim Rejections - 35 USC § 103 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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. Claim 5 is rejected under 35 U.S.C. 103 as being unpatentable over Umeda et al. (JP 2022103917A) in view of Heinisch et al. (DE3735767A1). Regarding claim 5, Umeda et al. discloses the claimed invention except for the first insulation sub-layer comprising a pressure of about 100 Torr to about 1000 m Torr. Heinisch et al. teaches that it is known to provide a tank with pressurized insulation which has an insulation layer comprising a pressure of about 100 Torr to about 1000 m Torr (“operating at pressures up to 700 bar”; up to 700bar includes the range of 100 Torr). It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to provide the storage container of Umeda et al. with the first insulation sub-layer comprising a pressure of about 100 Torr to about 1000 m Torr, as taught by Heinisch et al., in order to provide sufficient strength to support the tank and since it has been held that “where the general conditions of a claim are disclosed in the prior art, it is not inventive to discover the optimum or workable ranges by routine experimentation.” In re Aller, 220 F.2d 454, 456, 105 USPQ 233, 235 (CCPA 1955). Claim 7 is rejected under 35 U.S.C. 103 as being unpatentable over Umeda et al. (JP 2022103917A) in view of Kroll et al. (CN108027109A). Regarding claim 7, Umeda et al. discloses the claimed invention except for the first insulation sub-layer comprising a load-bearing foam comprising a closed-cell foam. Kroll et al. teaches that it is known to provide a tank with the first insulation sub-layer comprising a load-bearing foam comprising a closed-cell foam (see claim 6). It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to provide the storage container of Umeda et al. with the first insulation sub-layer comprising a load-bearing foam comprising a closed-cell foam, as taught by Kroll et al., in order to provide sufficient strength to support the tank and since it has been held to be within the general skill of a worker in the art to select a known material on the basis of its suitability for the intended use as a matter of obvious design choice. In re Leshin, 125 USPQ 416. Claim 12 is rejected under 35 U.S.C. 103 as being unpatentable over Umeda et al. (JP 2022103917A) in view of Park et al. (KR20230171064A). Regarding claim 12, Umeda et al. discloses the claimed invention except for the mixture comprising about 60 wt% to about 99 wt% perlite and about 1 wt% to about 40 wt% glass microspheres. Park et al. teaches that it is known to provide a tank with the insulation layer comprising perlite and glass microspheres. It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to provide the storage container of Umeda et al. with the mixture comprising perlite and glass microspheres, as taught by Park et al. and further comprises about 60 wt% to about 99 wt% perlite and about 1 wt% to about 40 wt% glass microspheres, in order to provide sufficient thermal insulation as perlite and glass microspheres are known materials for insulation, and since it has been held to be within the general skill of a worker in the art to select a known material on the basis of its suitability for the intended use as a matter of obvious design choice. In re Leshin, 125 USPQ 416. Claims 13-17, 19 and 20 are rejected under 35 U.S.C. 103 as being unpatentable over Umeda et al. (JP 2022103917A) in view of Rohwer (DE10200600090614A1). Regarding claim 13, Umeda et al. teaches a liquid gas storage container 1 comprising an inner shell 3 forming a cavity (figure 1), the inner shell disposed on an insulation base 36, the insulation base comprising a first insulation sub-layer 36, an outer shell 5 forming an insulation volume between the inner shell and the outer shell (figure 1), a first insulation layer 61 disposed within the insulation volume and around the inner shell 3 and the insulation base 36, and a second insulation layer 62 disposed within the insulation volume between the first insulation layer 61 and the outer shell 5. Further regarding claim 13, Umeda et al. discloses the claimed invention except for the membrane layer. Rohwer teaches that it is known to provide a tank with membrane layer (see layer 38; figure 5). It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to provide the storage container of Umeda et al. with the membrane layer, as taught by Rohwer, in order to provide a waterproof barrier between the layers for protection. Regarding claim 14, the membrane layer comprises one or more of an aluminized Mylar, Mylar, epoxy, water glass, or zero-gel (Rohwer discloses aluminized Mylar for layer 38). Regarding claim 15, a skirt disposed along a sidewall of the insulation base, wherein the first insulation layer is disposed within the insulation volume and around the skirt (figure 1). Regarding claim 16, one or more anchors 9, 10 mechanically coupled to the skirt. Regarding claim 17, the first insulation sub- layer 31, 36, 35 comprises a load-bearing insulation (capable of bearing a load). Regarding claim 19, an interleaving layer 41 disposed between the first insulation sub-layer 36 and a second insulation sub-layer 46, or the first insulation layer and the second insulation layer. Regarding claim 20, a protective layer 31 disposed on the first insulation sub-layer. Claim 18 is rejected under 35 U.S.C. 103 as being unpatentable over Umeda et al. (JP 2022103917A) in view of Rohwer (DE10200600090614A1), as applied to claim 17 above, and further in view of Kroll et al. (CN108027109A). Regarding claim 18, the modified tank of Umeda et al. discloses the claimed invention except for the first insulation sub-layer comprising a load-bearing foam comprising a closed-cell foam. Kroll et al. teaches that it is known to provide a tank with the first insulation sub-layer comprising a load-bearing foam comprising a closed-cell foam (see claim 6). It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to provide the modified storage container of Umeda et al. with the first insulation sub-layer comprising a load-bearing foam comprising a closed-cell foam, as taught by Kroll et al., in order to provide sufficient strength to support the tank and since it has been held to be within the general skill of a worker in the art to select a known material on the basis of its suitability for the intended use as a matter of obvious design choice. In re Leshin, 125 USPQ 416. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. The prior art is cited for the insulated structure. THIS ACTION IS NON-FINAL. Any inquiry concerning this communication or earlier communications from the examiner should be directed to NIKI MARINA ELOSHWAY whose telephone number is (571)272-4538. The examiner can normally be reached Monday through Friday 7: 00 a.m. to 3:00 p.m.. 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, Orlando E. Avilés can be reached at 571-270-5531. 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. /NIKI M ELOSHWAY/Examiner, Art Unit 3736
Read full office action

Prosecution Timeline

Jun 20, 2024
Application Filed
Apr 01, 2026
Non-Final Rejection mailed — §102, §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
64%
Grant Probability
88%
With Interview (+24.1%)
2y 8m (~9m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1585 resolved cases by this examiner. Grant probability derived from career allowance rate.

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