Prosecution Insights
Last updated: October 25, 2026
Application No. 18/031,918

Centrifugal Pump With a Drive

Non-Final OA §102§103
Filed
Apr 14, 2023
Priority
Oct 16, 2020 — DE 10 2020 006 366.7 +1 more
Examiner
KENERLY, TERRANCE L
Art Unit
2834
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Ksb SE & Co. Kgaa
OA Round
5 (Non-Final)
74%
Grant Probability
Favorable
5-6
OA Rounds
0m
Est. Remaining
89%
With Interview

Examiner Intelligence

Grants 74% — above average
74%
Career Allowance Rate
857 granted / 1162 resolved
+5.8% vs TC avg
Strong +15% interview lift
Without
With
+15.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
33 currently pending
Career history
1193
Total Applications
across all art units

Statute-Specific Performance

§101
1.6%
-38.4% vs TC avg
§103
60.5%
+20.5% vs TC avg
§102
26.5%
-13.5% vs TC avg
§112
9.3%
-30.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1162 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 . Response to Arguments Applicant’s arguments with respect to claim(s) 7-9, 11 & 13 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. Specifically, new reference Henke et al. (US 20120001505) will be used in combination with Henryet al. to teach the newly added limitation of “wherein the cooling body is integrally formed with the fan-side bearing arrangement, as a one-piece cast part”. 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(s) 7-9 and 11 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Henry et al. (US 20090267432). 7. Henry et al. teach: A centrifugal pump (fig 2), comprising: a drive 10 having a rotor 25, a stator winding (inherent due to motor leads 160, fig 5, MPEP 2112), a cooling arrangement (fig 2) which includes a frequency inverter (the frequency inverter is included in the drive electronics 120, MPEP 2112 & fig 2) and a cooling body 85, a motor housing 45, a fan 70, a fan-side bearing arrangement (fig 1 below) configured to support a rotor shaft 30, and a pump-side bearing arrangement (fig 1 below), wherein the cooling body is integrally formed with the fan-side (via shroud 75, fig 2) and is configured as an electronics housing base 85 (figs 2-4), and the cooling body has surface-enlarging elements 110 in the form of cooling ribs, which are formed integrally with the cooling body (figs 2-4) and adapted to the shape of the motor housing (figs 2-4); but does not teach that the cooling body is integrally formed with the fan-side bearing arrangement, as a one-piece cast part. PNG media_image1.png 738 772 media_image1.png Greyscale PNG media_image2.png 800 750 media_image2.png Greyscale Henke et al. teach that the cooling body (generally located at the rim 19, Henke et al. fig 1) is integrally formed with the fan-side bearing arrangement 8, as a one-piece cast part (figs 1-3) to direct cooling air towards the electronics casing (abstract). Henke et al. does not specifically mention “one-piece cast part”. However, Henke et al. figs and/or specification do not indicate that the fan-side bearing arrangement and the cooling body are separate piece as can clearly be seen in Henry et al. drawings and specification. Since the examiner is to construe the figure in Henke et al. for what they reasonably convey (MPEP 2125). As a result, it would have been obvious to a person having ordinary skill in the art prior to the invention of Henry et al. being effectively filed to modify it such that the cooling body is integrally formed with the fan-side bearing arrangement, as a one-piece cast part, as taught by Henke et al. so as to prolong the service life of the motor. 8. Henry et al. teach: The centrifugal pump as claimed in claim 7, wherein the cooling body is connected directly to the one of the fan-side and pump-side bearing arrangements (via shroud 75, fig 2). 9. Henry et al. teach: The centrifugal pump as claimed in claim 8, wherein the cooling body is integral with the one of the fan-side and pump-side bearing arrangements (via shroud 75, fig 2). 11. Henry et al. teach: The centrifugal pump as claimed in claim 7, wherein the bearing arrangement has one or more guide channels (fig 5 below configured for passage of a connection 160 between the frequency inverter and the stator winding. PNG media_image3.png 744 692 media_image3.png Greyscale Claim(s) 13 is/are rejected under 35 U.S.C. 103 as being unpatentable over Henry et al. in view of Henke et al. and in further view of Ramqvist (US 2494200). 13. Henry et al. has been discussed above, re claim 7; but does not explicitly teach that the fan is configured to generate: a central primary air stream, and a secondary air stream which passes into the cooling body from a region within fan cover over the fan. Ramqvist teaches that the fan 1 is configured to generate: a central primary air stream (indicated by arrows 9, fig 1), and a secondary air stream (indicated by arrows a, fig 1) which passes into the cooling body (of Henry et al.) from a region within the fan cover 8 over the fan (fig 1) to cool the inverter (of Henry et al.) to cool both the drive and the inverter. As a result, it would have been obvious to a person having ordinary skill in the art before the invention was effectively filed to modify the invention of Henry et al. so that the fan is configured to generate: a central primary air stream, and a secondary air stream which passes into the cooling body from a region within fan cover over the fan., as taught by Ramqvist so as to cool both the drive and the inverter. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to TERRANCE L KENERLY whose telephone number is (571)270-7851. The examiner can normally be reached M-F 9am-5pm. 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, Christopher Koehler can be reached on 5712723560. 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. /TERRANCE L KENERLY/Primary Examiner, Art Unit 2834
Read full office action

Prosecution Timeline

Show 6 earlier events
Oct 06, 2025
Response after Non-Final Action
Jan 12, 2026
Non-Final Rejection mailed — §102, §103
Apr 03, 2026
Response Filed
Jun 12, 2026
Final Rejection mailed — §102, §103
Sep 01, 2026
Response after Non-Final Action
Sep 14, 2026
Request for Continued Examination
Sep 15, 2026
Response after Non-Final Action
Oct 08, 2026
Non-Final Rejection mailed — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12771196
THREE-PHASE DUAL ELECTRIC MACHINE AND METHOD FOR CONTROLLING SUCH A MACHINE
4y 4m to grant Granted Oct 20, 2026
Patent 12771206
ROTOR ASSEMBLY, AND SYNCHRONOUS MACHINE INCLUDING THE ROTOR ASSEMBLY
2y 5m to grant Granted Oct 20, 2026
Patent 12771218
MODULAR AXIAL FIELD ROTARY ENERGY DEVICE WITH PCB STATOR AND VARIABLE FREQUENCY DRIVE SYSTEM
1y 9m to grant Granted Oct 20, 2026
Patent 12761077
DRIVE DEVICE AND COLORIMETER DEVICE
2y 4m to grant Granted Oct 13, 2026
Patent 12756261
ELECTRIC MOTOR BEARING ASSEMBLY AND METHOD
5y 2m to grant Granted Oct 06, 2026
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
74%
Grant Probability
89%
With Interview (+15.2%)
2y 7m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 1162 resolved cases by this examiner. Grant probability derived from career allowance rate.

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