Prosecution Insights
Last updated: April 19, 2026
Application No. 18/252,610

MONITORING THE PERFORMANCE OF A CRYOPUMP

Non-Final OA §103
Filed
May 11, 2023
Examiner
TREMARCHE, CONNOR J.
Art Unit
3762
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Edwards Vacuum LLC
OA Round
5 (Non-Final)
65%
Grant Probability
Favorable
5-6
OA Rounds
3y 0m
To Grant
93%
With Interview

Examiner Intelligence

Grants 65% — above average
65%
Career Allow Rate
407 granted / 623 resolved
-4.7% vs TC avg
Strong +27% interview lift
Without
With
+27.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
61 currently pending
Career history
684
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
61.4%
+21.4% vs TC avg
§102
15.5%
-24.5% vs TC avg
§112
21.4%
-18.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 623 resolved cases

Office Action

§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 . Election/Restrictions In view of the Notice of Appeal filed on 12/01/2025, PROSECUTION IS HEREBY REOPENED. New grounds of rejection are set forth below. To avoid abandonment of the application, appellant must exercise one of the following two options: (1) file a reply under 37 CFR 1.111 (if this Office action is non-final) or a reply under 37 CFR 1.113 (if this Office action is final); or, (2) initiate a new appeal by filing a notice of appeal under 37 CFR 41.31 followed by an appeal brief under 37 CFR 41.37. The previously paid notice of appeal fee and appeal brief fee can be applied to the new appeal. If, however, the appeal fees set forth in 37 CFR 41.20 have been increased since they were previously paid, then appellant must pay the difference between the increased fees and the amount previously paid. A Supervisory Patent Examiner (SPE) has approved of reopening prosecution by signing below: /MICHAEL G HOANG/ Supervisory Patent Examiner, Art Unit 3762 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. Claims 1, 2, 10, 11, and 18 are rejected under 35 U.S.C. 103 as being unpatentable over US 2020/0132064 (Takahashi hereinafter) in view of US 2009/0282842 (Koyama hereinafter) in view of US 2002/0074324 (Wang hereinafter) and further in view of US KR 10-2018-0048290 (Asai hereinafter). Regarding claim 1, Takahashi teaches a cryopump and control scheme (Figure 1) that discloses controlling a variable speed motor (Motor 80) controlling a flow of refrigerant through a refrigerating system of said cryopump to operate at a predetermined speed so as to cool a first stage of the refrigerator (First stage 20) and a second stage of the refrigerator (Second stage 21 and the motor 80 per ¶ 23, 51, and 55); setting a first predetermined temperature for said first stage of a refrigerator and said a second predetermined temperature for a second stage of said refrigerator (¶ 106-107); and while said refrigerating system is cooling said first stage and said second stage, controlling heaters associated with said first and second stages of said refrigerator such that said first and second predetermined temperatures are maintained (Operation detailed in ¶ 106-107), and the use of heaters (Heaters 94 and 96). Takahashi is silent with respect to a step of following completion of a regeneration cycle controlling said cryopump to perform a predetermined test routine for testing a performance of said cryopump under predetermined conditions wherein said step of controlling said cryopump to perform a predetermined test routine. However, Koyama teaches a cryopump and method of diagnosing the cryopump that discloses following completion of a regeneration cycle controlling said cryopump to perform a predetermined test routine for testing a performance of said cryopump under predetermined conditions (¶ 66 where the observation is occurring during the working conditions which is being interpreted as after a regeneration cycle). It would have been obvious to one of ordinary skill in the art before the effective filing date of the invention to modify the control aspect of Takahashi with the control method timing of Koyama to ensure that the pump has completed a cycle prior to testing. Takahashi is silent with respect to determining a power consumed by the heaters, the power providing an indication of the performance of said cryopump. However, Wang teaches a vacuum pump system that discloses a step of determining a power consumed by the heaters, the power providing an indication of the performance of said cryopump (Heaters 31-35 with individual sensors per ¶ 30). The resultant combination would use the power sensors of Wang such that there is a step of determining a power consumed by the heaters, the power providing an indication of the performance of said cryopump of Takahashi. It would have been obvious to one of ordinary skill in the art before the effective filing date of the invention to modify the control of Takahashi with the heater power sensing of Wang to ensure that the heaters are outputting the required heat for the temperature control of the cryopump. Takahashi is silent with respect to determining a power consumed by the heaters and comparing the determined power with a previous power valve. However, Asai teaches a vacuum pump and control scheme that discloses diagnostic control based on previous heater power values (“The diagnostic rule of abnormality is defined as a diagnostic rule defined in rule (38). The device status monitoring and controlling section 215e performs an abnormality determination in accordance with this diagnosis rule. For example, the rule 38 indicates that the average value in the current batch process of the measured value of the piping temperature of the first device data to be monitored is a variation smaller than the reference value in comparison with the average value in the previous batch process, (Rule) that the current average value of the heater power values of the pipe heaters of the first and second pipe heaters fluctuates by more than a threshold value in comparison with the previous average value.”) The resultant combination would take the control of Takahashi with the individual heater monitoring of Wang while incorporating the detection and comparison of previous heater values of Asia to disclose determining a power consumed by the heaters and comparing the determined power with a previous power valve. It would have been obvious to one of ordinary skill in the art before the effective filing date of the invention to modify the control of the cryopump and sensors of Takahashi/Wang with the sensing comparison and control of Asai to ensure that the cryopump is operating within the designed/historical specifications for optimal efficiency. Regarding claim 2, Takahashi’s modified teachings are described above in claim 1 where the combination of Takahashi, Koyama, Wang, and Asai would further disclose that said method controlling said cryopump to perform said predetermined test routine periodically after at least a subset of said regeneration cycles (Under the broadest reasonable interpretation, the monitoring/testing of Takahashi/Koyama is constantly sensing and therefore the test routine will be running after any regeneration cycle). Regarding claim 10, Takahashi teaches a cryopump and control scheme (Figure 1) that discloses controlling a variable speed motor (Motor 80) controlling a flow of refrigerant through a refrigerating system of said cryopump to operate at a predetermined speed so as to cool a first stage of the refrigerator (First stage 20) and a second stage of the refrigerator (Second stage 21 and the motor 80 per ¶ 23, 51, and 55); setting a first predetermined temperature for said first stage of a refrigerator and said a second predetermined temperature for a second stage of said refrigerator (¶ 106-107); and while said refrigerating system is cooling said first stage and said second stage, controlling heaters associated with said first and second stages of said refrigerator such that said first and second predetermined temperatures are maintained (Operation detailed in ¶ 106-107), and the use of heaters (Heaters 94 and 96). Takahashi is silent with respect that said control circuitry being configured to determine when a regeneration cycle has completed and to control said cryopump following completion of said regeneration cycle to perform a predetermined test routine for testing a performance of said cryopump under predetermined conditions. However, Koyama teaches a cryopump and method of diagnosing the cryopump that discloses control circuitry being configured to determine when a regeneration cycle has completed and to control said cryopump following completion of said regeneration cycle to perform a predetermined test routine for testing a performance of said cryopump under predetermined conditions (¶ 66 where the observation is occurring during the working conditions which is being interpreted as after a regeneration cycle). It would have been obvious to one of ordinary skill in the art before the effective filing date of the invention to modify the control aspect of Takahashi with the control method timing of Koyama to ensure that the pump has completed a cycle prior to testing. Takahashi is silent with respect to determining a power consumed by the heaters, the power providing an indication of the performance of said cryopump. However, Wang teaches a vacuum pump system that discloses a step of determining a power consumed by the heaters, the power providing an indication of the performance of said cryopump (Heaters 31-35 with individual sensors per ¶ 30). The resultant combination would use the power sensors of Wang such that there is a step of determining a power consumed by the heaters, the power providing an indication of the performance of said cryopump of Takahashi. It would have been obvious to one of ordinary skill in the art before the effective filing date of the invention to modify the control of Takahashi with the heater power sensing of Wang to ensure that the heaters are outputting the required heat for the temperature control of the cryopump. Takahashi is silent with respect to determining a power consumed by the heaters and comparing the determined power with a previous power valve. However, Asai teaches a vacuum pump and control scheme that discloses diagnostic control based on previous heater power values (“The diagnostic rule of abnormality is defined as a diagnostic rule defined in rule (38). The device status monitoring and controlling section 215e performs an abnormality determination in accordance with this diagnosis rule. For example, the rule 38 indicates that the average value in the current batch process of the measured value of the piping temperature of the first device data to be monitored is a variation smaller than the reference value in comparison with the average value in the previous batch process, (Rule) that the current average value of the heater power values of the pipe heaters of the first and second pipe heaters fluctuates by more than a threshold value in comparison with the previous average value.”) The resultant combination would take the control of Takahashi with the individual heater monitoring of Wang while incorporating the detection and comparison of previous heater values of Asia to disclose determining a power consumed by the heaters and comparing the determined power with a previous power valve. It would have been obvious to one of ordinary skill in the art before the effective filing date of the invention to modify the control of the cryopump and sensors of Takahashi/Wang with the sensing comparison and control of Asai to ensure that the cryopump is operating within the designed/historical specifications for optimal efficiency. Regarding claim 11, Takahashi’s modified teachings are described above in claim 1 where the combination of Takahashi, Koyama, Wang, and Asai would further disclose that said control circuitry being configured to control said cryopump to perform said predetermined test routine periodically after at least a subset of said regeneration cycles (Under the broadest reasonable interpretation, the monitoring/testing of Takahashi/Koyama is constantly sensing and therefore the test routine will be running after any regeneration cycle). Regarding claim 18, Takahashi teaches a cryopump (Figure 1) that discloses a refrigerator unit (Cryocooler 16); a variable speed motor for controlling a flow of refrigerant through a cooling system of said cryopump (Motor 80 per ¶ 32, 51, and 55); and control circuitry according to claim 10 (Please refer to the above rejection of Claim 10). Response to Arguments Applicant’s arguments with respect to claims 1, 2, 10, 11, and 18 have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to CONNOR J. TREMARCHE whose telephone number is (571)272-2175. The examiner can normally be reached Monday - Thursday 0700-1700 Eastern. 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, MICHAEL HOANG can be reached at (571) 272-6460. 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. /CONNOR J TREMARCHE/Primary Examiner, Art Unit 3762
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Prosecution Timeline

May 11, 2023
Application Filed
Nov 04, 2024
Non-Final Rejection — §103
Feb 04, 2025
Response Filed
Feb 24, 2025
Final Rejection — §103
Apr 28, 2025
Response after Non-Final Action
May 28, 2025
Request for Continued Examination
Jun 04, 2025
Response after Non-Final Action
Jun 15, 2025
Non-Final Rejection — §103
Aug 18, 2025
Response Filed
Sep 04, 2025
Final Rejection — §103
Dec 01, 2025
Notice of Allowance
Dec 01, 2025
Response after Non-Final Action
Jan 14, 2026
Response after Non-Final Action
Feb 03, 2026
Non-Final Rejection — §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

5-6
Expected OA Rounds
65%
Grant Probability
93%
With Interview (+27.4%)
3y 0m
Median Time to Grant
High
PTA Risk
Based on 623 resolved cases by this examiner. Grant probability derived from career allow rate.

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