Prosecution Insights
Last updated: April 19, 2026
Application No. 18/695,848

OPTICAL GAS SENSOR DEVICE

Non-Final OA §102§103
Filed
Mar 27, 2024
Examiner
GUNBERG, EDWIN C
Art Unit
2884
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Minebea Electric Co. Ltd.
OA Round
1 (Non-Final)
78%
Grant Probability
Favorable
1-2
OA Rounds
2y 6m
To Grant
84%
With Interview

Examiner Intelligence

Grants 78% — above average
78%
Career Allow Rate
481 granted / 618 resolved
+9.8% vs TC avg
Moderate +7% lift
Without
With
+6.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
22 currently pending
Career history
640
Total Applications
across all art units

Statute-Specific Performance

§101
2.1%
-37.9% vs TC avg
§103
51.8%
+11.8% vs TC avg
§102
30.0%
-10.0% vs TC avg
§112
13.0%
-27.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 618 resolved cases

Office Action

§102 §103
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 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. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claim(s) 1 and 3-9 are rejected under 35 U.S.C. 102(a)(1) and 102(a)(2) as being anticipated by Hopper et al. (2017/0343419) Regarding claim 1, Hopper discloses an optical gas sensor device comprising: a substrate (Hopper, substrate 1); a light source that is mounted on a plane of the substrate (Hopper, IR source 2), that includes a light emitting surface facing the same direction as the plane of the substrate, and that emits infrared rays from the light emitting surface; a filter that transmits infrared rays with a wavelength corresponding to an absorption wavelength of a gas as a detection target among the infrared rays and emits the transmitted infrared rays to the gas as the detection target (Hopper, optical filter 5); a light receiver that detects the infrared rays incident through the gas as the detection target (Hopper, thermopile 4); a cover which is provided on the substrate so as to cover the light source and the light receiver (Hopper, Fig. 1 items 6, 7), that reflects the infrared rays passing the filter on an inner surface of the cover, and that is provided so that at least some of the reflected light reaches the light receiver; and a gas introducer that introduces gas as the detection target into the cover (Hopper, operation shown Fig. 1) Regarding claim 3, Hopper further discloses the light source is a MEMS type light source. (Hopper, [0005]) Regarding claim 4, Hopper further discloses the light source is formed from a semiconductor substrate; and the light source includes, a base including a diaphragm, and a thin film heater formed on the diaphragm. (Hopper, [0038]) Regarding claim 5, Hopper further discloses the cover forms a space capable of storing the gas as the detection target. (Hopper, [0067]) Regarding claim 6, Hopper further discloses the cover forms an optical path of the infrared rays passing through the gas as the detection target by at least one of a planar inner surface and a curved inner surface. (Hopper, Fig. 1, surface is substantially planar) Regarding claim 7, Hopper further discloses the cover includes on its inner surface an infrared reflective film that reflects infrared rays. (Hopper, [0067]) Regarding claim 8, Hopper further discloses the gas introducer is provided in the cover. (Hopper, Fig. 10) Regarding claim 9, Hopper further discloses the light receiver includes an infrared sensor using one of a thermopile type, a photodiode, a bolometer, and a pyroelectric sensor. (Hopper, thermopile 4) 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 2 is rejected under 35 U.S.C. 103 as being unpatentable over Hopper in view of Lazarev et al. (2007/0195416) Regarding claim 2, Hopper does not explicitly disclose the filter includes a dielectric multilayer film formed on a semiconductor substrate. Lazarev discloses a filter including a dielectric multilayer film formed on a semiconductor substrate. (Lazarev, [0081]) It would have been obvious to one of ordinary skill in the art before the filing date of the claimed invention to use the interferential optical filter of Lazarev in the analysis device of Hopper since Hopper requires a filter but provides no specific direction as to what kind, and Lazarev provides a suitable filter type compatible with the construction of Hopper. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to EDWIN C GUNBERG whose telephone number is (571)270-3107. The examiner can normally be reached Monday-Friday, 8:30AM-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, Uzma Alam can be reached at 571-272-2995. 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. /EDWIN C GUNBERG/Primary Examiner, Art Unit 2884
Read full office action

Prosecution Timeline

Mar 27, 2024
Application Filed
Jan 07, 2026
Non-Final Rejection — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12601678
COMPLEX GAS SENSOR, MANUFACTURING METHOD THEREOF, AND CONTROL METHOD OF COMPLEX GAS SENSOR
2y 5m to grant Granted Apr 14, 2026
Patent 12600490
VEHICLE HYDROGEN FIRE DETECTION DEVICE
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Patent 12590796
DEVICE AND METHOD FOR DETERMINING DIMENSIONAL DATA RELATING TO AN OBJECT
2y 5m to grant Granted Mar 31, 2026
Patent 12581210
THERMAL IMAGE SENSOR AND ELECTRONIC DEVICE INCLUDING THE SAME
2y 5m to grant Granted Mar 17, 2026
Patent 12571925
METHOD FOR CALCULATING THE ABSOLUTE DETECTION EFFICIENCY OF THE LABR3(CE) SCINTILLATION DETECTOR WITH RESPECT TO A LARGE-SIZED GLASS FIBRE INSTALLED IN A HIGH VOLUME AIRBORNE SAMPLING SYSTEM
2y 5m to grant Granted Mar 10, 2026
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
78%
Grant Probability
84%
With Interview (+6.7%)
2y 6m
Median Time to Grant
Low
PTA Risk
Based on 618 resolved cases by this examiner. Grant probability derived from career allow rate.

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