Prosecution Insights
Last updated: April 19, 2026
Application No. 18/748,060

Increasing Tortuosity To Decrease Heat Transfer In Hollow Structures By Shaping The Hollow Structures, A Process That Entails Distribution Of Forces During Transformation Of Seeds

Non-Final OA §103
Filed
Jun 19, 2024
Examiner
DEHGHAN, QUEENIE S
Art Unit
1741
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Plassein Technologies Ltd. LLC
OA Round
1 (Non-Final)
62%
Grant Probability
Moderate
1-2
OA Rounds
3y 5m
To Grant
73%
With Interview

Examiner Intelligence

Grants 62% of resolved cases
62%
Career Allow Rate
519 granted / 839 resolved
-3.1% vs TC avg
Moderate +11% lift
Without
With
+11.1%
Interview Lift
resolved cases with interview
Typical timeline
3y 5m
Avg Prosecution
52 currently pending
Career history
891
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
52.9%
+12.9% vs TC avg
§102
13.2%
-26.8% vs TC avg
§112
26.1%
-13.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 839 resolved cases

Office Action

§103
DETAILED ACTION 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. Claim 1 is rejected under 35 U.S.C. 103 as being unpatentable over Lynch (2022/0185683) in view of Zheng (CN 111732329 machine translation provided). Lynch teaches a method for manufacturing an insulating board, the method comprising providing a tray 608 having a bottom surface and plurality of side walls 606, placing on the bottom surface of the tray a plurality of seeds in a first layer, placing a plurality of seeds in a second layer on top of the first layer, a center of each seed in the second layer being horizontally offset from a center of each seed of the first layer, placing a plurality of seeds in a third layer on top of the second layer, a center of each seed in the third layer being horizontally offset from a center of each seed of the first layer and the second layer, and heating the tray to transform the seeds into a plurality of hollow structures (figure 6, [0159]-[0160]). However, Lynch doesn’t specify printing of the seeds in this embodiment. Lynch teaches in another embodiment wherein seeds are deposited as first layer using a hopper, basically mimicking a printing method, before a second layer is deposited (figure 7, [0162]-[0163]). Zheng also teaches a method for making an insulating board comprising a foaming agent that expands and forms hollow structures within the glass article, the method comprising printing each layer of a glass mixture comprising glass powder and foaming agent. Zheng teaches the printing can be 3D printing, which allows for flexibility in producing any desired shape and controlling the porosity of the insulating board (whole reference). Accordingly, it would have been obvious to one of ordinary skill in the art at the time of the invention to have utilized 3D printing to produce the layers of seeds in the method of Lynch as 3D printing allows for the ease and flexibility in providing the desired arrangement of seeds, as taught by Zheng. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to QUEENIE S DEHGHAN whose telephone number is (571)272-8209. The examiner can normally be reached Monday-Friday 8:00-4:30. 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, Alison Hindenlang can be reached at 571-270-7001. 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. /QUEENIE S DEHGHAN/Primary Examiner, Art Unit 1741
Read full office action

Prosecution Timeline

Jun 19, 2024
Application Filed
Oct 27, 2025
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12600658
SYSTEM AND METHOD FOR PLATINUM FREE MELTING OF HIGH INDEX GLASSES
2y 5m to grant Granted Apr 14, 2026
Patent 12595200
MOLTEN GLASS TRANSPORT SYSTEM
2y 5m to grant Granted Apr 07, 2026
Patent 12590025
METHOD AND APPARATUS FOR PROCESSING GLASS ELEMENTS
2y 5m to grant Granted Mar 31, 2026
Patent 12590028
METHOD FOR TREATMENT OF A GLASS SUBSTRATE WITH IMPROVED EDGE STRENGTH
2y 5m to grant Granted Mar 31, 2026
Patent 12570565
GLASS TUBE CONVERTING PROCESS WITH PIERCING DURING INDEX
2y 5m to grant Granted Mar 10, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

1-2
Expected OA Rounds
62%
Grant Probability
73%
With Interview (+11.1%)
3y 5m
Median Time to Grant
Low
PTA Risk
Based on 839 resolved cases by this examiner. Grant probability derived from career allow rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month