Prosecution Insights
Last updated: July 17, 2026
Application No. 18/492,990

Rotary Encoder

Non-Final OA §102§103
Filed
Oct 24, 2023
Priority
Oct 24, 2022 — GB 2215751.5
Examiner
AURORA, REENA
Art Unit
2858
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Dalmatic Tnv A/S
OA Round
2 (Non-Final)
87%
Grant Probability
Favorable
2-3
OA Rounds
0m
Est. Remaining
74%
With Interview

Examiner Intelligence

Grants 87% — above average
87%
Career Allowance Rate
1026 granted / 1179 resolved
+19.0% vs TC avg
Minimal -14% lift
Without
With
+-13.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 5m
Avg Prosecution
31 currently pending
Career history
1204
Total Applications
across all art units

Statute-Specific Performance

§101
1.7%
-38.3% vs TC avg
§103
34.0%
-6.0% vs TC avg
§102
30.9%
-9.1% vs TC avg
§112
19.1%
-20.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1179 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 . This communication is in response to amendment received on 03/10/2026. Upon further consideration, the previous indication of allowability of claims 7 and 21 is withdrawn in view of the rejection found below. Claims 1 – 6, 8 – 20 and 22 – 25 are presented for examination. 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. Claim(s) 1 – 3, 12, 13 and 15 - 17 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by YAMASHITA (2023/0175871). As to claims 1 and 15, YAMASHITA discloses a monitoring control device comprising a sensor (resolver 2, Fig. 1) configured to measure an angle of a rotating shaft ([0013],The resolver 2 is mechanically connected to the rotor included in the motor. The resolver 2 is a rotation sensor that detects the rotation angle of the rotor and outputs the detected detection value as an analog value.); and a controller (10, 20, a first control device 10, and a second control device 20) configured to: determine a first angle of the rotating shaft at a first time ([0014], the absolute angle calculated by the RD converter 3 is referred to as a first absolute angle, and the relative angle calculated at the same timing as the first absolute angle is referred to as a first relative angle.); determine a second angle of the rotating shaft at a second time [0017], [0018], (The absolute angle calculation unit 21 identifies a sine function (sinθ) and a cosine function (cosθ) representing the rotation angle from the analog signal output from the resolver 2, and takes an arctangent (arctan [sinθ / cosθ]). Calculate the absolute angle of the rotor. The absolute angle calculation timing in the absolute angle calculation unit 21 is different from the first absolute angle calculated by the AD conversion of the RD converter 3. That is, the calculation timing of the absolute angle calculation unit 21 and the calculation timing of the RD converter 3 are not synchronized and are different timings. Hereinafter, the absolute angle calculated by the absolute angle calculation unit 21 is referred to as a second absolute angle. Further, the relative angle of the rotor acquired at the same timing as the calculation timing of the second absolute angle is referred to as a second relative angle. Since the first absolute angle and the second absolute angle are not calculated at the same timing (at the same time), a time difference will occur between the first absolute angle and the second absolute angle. Further, the absolute angle calculation unit 21 generates a second diagnostic signal based on the second absolute angle and outputs it to the absolute angle estimation unit 22. The second diagnostic signal includes information on the second absolute angle, in other words, information on the rotation angle calculated at a timing different from the first absolute angle used for motor control.); calculate an angular velocity based on: 1) an angular difference between the first angle and the second angle; and 2) a time difference between the first time and the second time; [0031], The control unit 11 included in the first control device 10 calculates the rotation speed of the rotor based on the first absolute angle. The control unit 11 acquires the first absolute angle from the RD converter 3 at a predetermined cycle, calculates the difference between the current value and the previous value of the first absolute angle, and the first absolute angle of the rotor is calculated from the calculated difference. Calculate one rotation speed. Further, the control unit 11 generates a first diagnostic signal including information on the first rotation speed and outputs the first diagnostic signal to the diagnostic unit 23 of the second control device 20. Since the first rotation speed is a value calculated based on the first absolute angle, the first diagnostic signal is a signal based on the first absolute angle.], [0032, The second control device 20 has an absolute angle calculation unit 21, a rotation speed calculation unit 24, and a diagnosis unit 23. The absolute angle calculation unit 21 is the same as the absolute angle calculation unit 21 in the first embodiment. The rotation speed calculation unit 24 calculates the rotation speed of the rotor based on the second absolute angle. The rotation speed calculation unit 24 acquires the second absolute angle calculated by the absolute angle calculation unit 21 in a predetermined cycle, calculates the difference between the current value and the previous value of the second absolute angle, and calculates the second absolute angle. The second rotation speed of the rotor is calculated from the difference between. The timing of calculating the previous value of the first absolute angle is different from the timing of calculating the previous value of the second absolute angle, and the timing of calculating the current value of the first absolute angle is the calculation of the current value of the second absolute angle. It's different from the timing. The calculation timing of the first absolute angle is the calculation timing of the RD converter 3, and the calculation timing of the second absolute angle is the calculation timing of the absolute angle calculation unit 21.] and transmit an output packet comprising the angular velocity [0034, the diagnostic unit 23 compares the first diagnostic signal output from the control unit 11 with the second diagnostic signal output from the rotation speed calculation unit 24 to diagnose the presence or absence of a detection abnormality in the rotation state of the rotor. Specifically, the diagnostic unit 23 identifies the first rotation speed from the first diagnosis signal, specifies the second rotation speed from the second diagnosis signal, and calculates the difference between the first rotation speed and the second rotation speed], wherein the first angle and the second angle are each represented by a binary number having N bits and take a value from 2subN angular resolution movements and wherein the angular velocity is determined based to a number of angular resolution movements. (The analog signals from the resolver are converted into digital signals by the RD converter 3. The digital signal is a two phase (A phase and B phase) encoder signal obtained by sampling a sine wave and a cosine wave included in an analog signal. The A and B phase digital signals contain information on the relative angle of the rotors [0013] – [0015]. Based on said digital signals, angular velocity is determined by control unit 11.), (Fig. 1 and 2), [0013]-[0015]. PNG media_image1.png 612 770 media_image1.png Greyscale As to claims 2 and 16, YAMASHITA discloses the output packet further comprises the second angle [0030], [0031]. As to claims 3 and 17, YAMASHITA discloses the angular velocity is calculated directly from the first angle and the second angle [0030], [0031]. As to claims 12 - 13, YAMASHITA discloses that a control system (11) communicatively coupled to the rotary encoder (2), wherein: the control system (11) is configured to receive the output packet transmitted by the rotary encoder (2), (Fig. 2, [0031]). 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(s) 4 – 6 and 18 - 20 is/are rejected under 35 U.S.C. 103 as being unpatentable over YAMASHITA (2023/0175871) in view of Zak (2009/0315541). As to claims 4 – 6 and 18 - 20, YAMASHITA fails to disclose the controller is configured to calculate the angular velocity based on: the angular difference divided by the time difference. Zak discloses an angular position sensor wherein the controller (26) is configured to calculate the angular velocity based on: the angular difference divided by the time difference [0014], [0017], [0029], [0030]. Therefore, at the time of the invention, it would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to modify the device of YAMASHITA in view of the teachings of Zak such that to calculate the angular velocity based on: the angular difference divided by the time difference wherein efficient correction factors can be maintained resulting in calculation of very precise angular velocity. Claim(s) 8 and 22 is/are rejected under 35 U.S.C. 103 as being unpatentable over YAMASHITA (2023/0175871) in view of Paul (4,836,304). As to claims 8 and 22, YAMASHITA fails to disclose that the controller is configured to transmit the output packet using a serial communication link. Paul discloses a system for weighing non-stationary objects wherein the controller is configured to transmit the output packet using a serial communication link (64, Fig. 4). Therefore, at the time of the invention, it would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to modify the device of YAMASHITA in view of the teachings of Paul such that using a serial communication link to transmit the output packet and transmission of data from transducers remotely from a central processor or diagnosis unit via wired or wireless links is very well known. Claim(s) 9 and 23 is/are rejected under 35 U.S.C. 103 as being unpatentable over YAMASHITA (2023/0175871) in view of Daubert (11,163,022). As to claims 9 and 23, YAMASHITA fails to determine the first angle and the second angle using a look up table. Daubert discloses a magnetic field sensor for angle detection with a phase-locked loop wherein the first angle and the second angle is determined using a look up table (148, Fig. 3), (Col. 9, line 64 – Col. 10, line 15; Col. 21, lines 29 - 41). Therefore, at the time of the invention, it would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to modify the device of YAMASHITA in view of the teachings of Daubert to include a look up table resulting in efficiency in processing speed of the device. Claim(s) 10, 11, 24 and 25 is/are rejected under 35 U.S.C. 103 as being unpatentable over YAMASHITA (2023/0175871) in view of Busse-Grawitz et al. (2011/0296698). As to claims 10 and 24, YAMASHITA fails to explicitly disclose that the rotary encoder is a magnetic rotary encoder. Busse-Grawitz et al. (hereinafter Busse) discloses a kit for an electric motor having a rotary encoder wherein Busse teaches a different variants of rotary encoders including magnetic rotary encoder [0002, the most different variants of rotary encoders are used, e.g. capacitive rotary encoders, inductive rotary encoders, magnetoresistive rotary encoders, optical rotary encoders, magnetic rotary encoders or potentiometric rotary encoders.]. Therefore, at the time of the invention, it would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to modify the device of YAMASHITA in view of the teachings of Busse to include a magnetic rotary encoder such that magnetic encoders are very well known and commonly used for measuring movement and speed. As to claims 11 and 25, YAMASHITA fails to explicitly disclose that the rotary encoder further comprises: a Printed Circuit Board on which the controller and the sensor are positioned; and a layer of lacquer over the controller and the sensor. Busse-Grawitz et al. (hereinafter Busse) discloses a kit for an electric motor having a rotary encoder wherein a Printed Circuit Board (11) on which the controller (12) and the sensor (10) are positioned; and a layer of lacquer (14) over the controller (12) and the sensor (10) (Fig. 4), [0056]. Therefore, at the time of the invention, it would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to modify the device of YAMASHITA in view of the teachings of Busse wherein a Printed Circuit Board on which the controller and the sensor are positioned; and a layer of lacquer over the controller and the sensor would protect the device from environmental influences, e.g. humidity, heat or impacts. Any inquiry concerning this communication or earlier communications from the examiner should be directed to REENA AURORA whose telephone number is (571)272-2263. The examiner can normally be reached M-F: 8:00AM-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, Lee Rodak can be reached at 5712705628. 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. /REENA AURORA/ Primary Examiner, Art Unit 2858
Read full office action

Prosecution Timeline

Oct 24, 2023
Application Filed
Dec 10, 2025
Non-Final Rejection mailed — §102, §103
Mar 10, 2026
Response Filed
Jun 03, 2026
Non-Final Rejection mailed — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

2-3
Expected OA Rounds
87%
Grant Probability
74%
With Interview (-13.5%)
2y 5m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1179 resolved cases by this examiner. Grant probability derived from career allowance rate.

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