Prosecution Insights
Last updated: April 19, 2026
Application No. 18/565,120

DUST REMOVAL DETERMINATION DEVICE, DUST REMOVAL DEVICE, AND DUST REMOVAL DETERMINATION METHOD

Non-Final OA §101§102
Filed
Nov 29, 2023
Examiner
CLEMENTE, ROBERT ARTHUR
Art Unit
1773
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Nippon Telegraph and Telephone Corporation
OA Round
1 (Non-Final)
81%
Grant Probability
Favorable
1-2
OA Rounds
2y 7m
To Grant
88%
With Interview

Examiner Intelligence

Grants 81% — above average
81%
Career Allow Rate
1064 granted / 1314 resolved
+16.0% vs TC avg
Moderate +7% lift
Without
With
+6.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
35 currently pending
Career history
1349
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
38.4%
-1.6% vs TC avg
§102
31.0%
-9.0% vs TC avg
§112
17.9%
-22.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1314 resolved cases

Office Action

§101 §102
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 § 101 35 U.S.C. 101 reads as follows: Whoever invents or discovers any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof, may obtain a patent therefor, subject to the conditions and requirements of this title. Claims 1 – 4 and 6 – 13 are rejected under 35 U.S.C. 101 because the claimed invention is directed to an abstract idea without significantly more. Claims 1 and 6 recite “determining whether the humidity is less than a reference value by using the measurement values”, which is considered a mathematical concept and/or a mental process. This step can be performed by basic math, such as subtracting a measured value for a baseline value, or by simply observing whether value is higher or lower than another value. This judicial exception is not integrated into a practical application because claims 1 and 6 do not recite additional elements that integrate the judicial exception into a practical application. The use of a processor to execute operations amounts to nothing more than an instruction to apply the abstract idea using a generic computer. The step of “acquiring a plurality of measurement values at predetermined time intervals of humidity in a structure, the structure including an oxygen concentration measurement device” is merely a data gathering step that amounts to insignificant extra-solution activity. Similarly, the step of “generating a signal, the signal instructing removal of dirt on the oxygen concentration measurement device according to the determination” amounts to an insignificant application of abstract idea. The signal can merely be a “yes” or “no” signal to a user to alert them whether a task should be performed. The claims do not include additional elements that are sufficient to amount to significantly more than the judicial exception because the processor is a generic computing device, a humidity sensor is routine and conventional sensor for measuring humidity values, and oxygen concentration measurement devices are routine and conventional devices for measuring oxygen concentration. Thus, the claim uses well-known, routine, and conventional structures to perform the insignificant extra-solution steps and provide the data for performing the determining in the abstract idea. Claims 2 – 4 and 7 – 13 recite further “acquiring” seps that are similarly directed to an insignificant extra-solution data gathering activity. The further “acquiring” steps do not recite additional elements that integrate the judicial exception into a practical application. Claims 2 – 4 and 7 – 13 also recite further “calculating” and “determining” steps that further define the abstract idea. These steps are similarly directed to an abstract idea and involve mathematical concepts and/or a mental processes. Calculating percentage values and standard deviations amount to performing mathematical calculations. The determining steps are further steps can be done by mere observation and/or simple math. 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 5 is rejected under 35 U.S.C. 102(a)(1) as being anticipated by CN 210442298 (hereinafter referred to as CN ‘298). In regard to claim 5, CN ‘298 discloses a dust removal device having a PLC controller (11), as discussed in paragraphs [0022] and [0032] of the machine translation. The PLC controller forms a processor configured to execute operations. As discussed in paragraph [0032], the processor acquires a signal from a temperature and humidity sensor (61) which instructs the removal of dirt. The signal is used to determine operation of dust removal unit (4) that applies vibration to a filter (2). The vibration of the filter (2) removes dust on a filter part of an oxygen centration measurement device, as the device of CN ‘298 is a zirconia probe used to measure oxygen concentration as discussed in paragraph [0004]. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to Robert Clemente whose telephone number is (571)272-1476. The examiner can normally be reached M-F 9-5. 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, Benjamin Lebron can be reached at 571-272-0475. 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. /ROBERT CLEMENTE/Primary Examiner, Art Unit 1773
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Prosecution Timeline

Nov 29, 2023
Application Filed
Jan 24, 2026
Non-Final Rejection — §101, §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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2y 5m to grant Granted Mar 24, 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
81%
Grant Probability
88%
With Interview (+6.8%)
2y 7m
Median Time to Grant
Low
PTA Risk
Based on 1314 resolved cases by this examiner. Grant probability derived from career allow rate.

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