Prosecution Insights
Last updated: July 17, 2026
Application No. 18/622,692

ELECTROMAGNETIC WAVE FOCUSING FOR CONCENTRIC PIPE EVALUATION

Non-Final OA §102
Filed
Mar 29, 2024
Priority
Apr 07, 2023 — provisional 63/494,789
Examiner
ANDREWS, BRENT J
Art Unit
2858
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Gowell International LLC
OA Round
1 (Non-Final)
78%
Grant Probability
Favorable
1-2
OA Rounds
10m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 78% — above average
78%
Career Allowance Rate
244 granted / 313 resolved
+10.0% vs TC avg
Strong +28% interview lift
Without
With
+28.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
19 currently pending
Career history
334
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
91.2%
+51.2% vs TC avg
§102
3.7%
-36.3% vs TC avg
§112
3.8%
-36.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 313 resolved cases

Office Action

§102
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 . Information Disclosure Statement 2. The information disclosure statement (IDS) submitted on 03/29/2024 and 07/23/2024 are in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement has been considered by the examiner. Claim Rejections - 35 USC § 102 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. 3. 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. 4. Claim(s) 1-20 are rejected under 35 U.S.C. 102(a)(1) as being unpatentable by Yu et al. (US 20190004202 A1) (“Yu”). PNG media_image1.png 900 827 media_image1.png Greyscale 5. Regarding claim 1, Yu teaches a device for measuring a wall thickness of two concentric pipes, comprising: an electromagnetic (EM) transmitter (Figures 1-2 item 28 discloses transmitter 28 may operate to generate a focused static magnetic field in Paragraph [0031]) configured to emit magnetic fluxes toward one or more EM receivers (Figures 1-2 item 32 discloses receivers 32 may be disposed on core 30. Receivers 32in Paragraph [0033]); one or more focusing devices (Figures 1-2 item 28 discloses transmitter 28 may operate to generate a focused static magnetic field in Paragraph [0031]) configured to focus the emitted magnetic fluxes to compress and guide the emitted magnetic fluxes further toward the one or more EM receivers (Figures 1-2 item 32 discloses receivers 32 may be disposed on core 30. Receivers 32in Paragraph [0033]); and the one or more EM receivers (Figures 1-2 item 32 discloses receivers 32 may be disposed on core 30. Receivers 32in Paragraph [0033]); configured to measure the compressed and guided magnetic fluxes to generate a measured flux for providing to a pipe anomaly analyzer (Figures 1-2 item 4 discloses inspection device 4 Inspection device 4 may be designed to detect defects and measure wall thickness in Paragraph [0029]), wherein said emitting, focusing, and measuring are in response to launching the device within an inner pipe (Figures 1-2 item 12 discloses may be used to position inspection device 4 and/or telemetry module 8 inside tubing 12 Paragraph [0028]) of the two concentric pipes (Figures 1-2 item 14 discloses determine the arrangement of tubing 12 in relation to casing 14 Paragraph [0035]), and wherein the pipe anomaly analyzer is configured to determine, based on the measured flux, the wall thickness of an outer pipe of the two concentric pipes (Figures 1-2 item 4 discloses inspection device 4 Inspection device 4 may be designed to detect defects and measure wall thickness in Paragraph [0029]). 6. Regarding claim 2, Yu teaches the device of claim 1, wherein the one or more focusing devices (Figures 1-2 item 28 discloses transmitter 28 may operate to generate a focused static magnetic field in Paragraph [0031]) comprise one or more of a magnet an electrical coil (Figures 1-2 item 28 discloses 28 may comprise a rare earth magnet, coil, in Paragraph [0031]), and ferromagnetic material. 7. Regarding claim 3, Yu teaches the device of claim 1, wherein the one or more focusing devices (Figures 1-2 item 28) comprise a first focusing device (Figures 1-2 item 28) disposed between the EM transmitter (Figures 1-2 item 28) and the one or more EM receivers (Figures 1-2 item 32) along a longitudinal direction of the two concentric pipes (Figures 1-2 item 12 & 14). 8. Regarding claim 4, Yu teaches the device of claim 3, wherein the one or more EM receivers (Figures 1-2 item 32) comprise a sequential array of receiver element rings (Figures 1-2 item 32 shows array ring) along the longitudinal direction of the two concentric pipes (Figures 1-2 item 12 & 14), each receiver element ring (Figures 1-2 item 32) in the sequential array comprising receiver elements arranged in a ring (Figures 1-2 item 32) configuration adjacent to an inside surface of the inner pipe (Figures 1-2 item 12), and wherein each pair of adjacent receiver element rings (Figures 1-2 item 32) within the sequential array is associated with one of the one or more focusing devices (Figures 1-2 item 28) that is disposed between said pair of adjacent receiver element rings (Figures 1-2 item 32) along the longitudinal direction of the two concentric pipes (Figures 1-2 item 12 & 14). 9. Regarding claim 5, Yu teaches the device of claim 3, wherein the one or more EM receivers (Figures 1-2 item 32) form a sequential array of receiver element rings (Figures 1-2 item 32) along the longitudinal direction of the two concentric pipes (Figures 1-2 item 12 & 14), each receiver element ring in the sequential array comprising receiver elements (Figures 1-2 item 32) arranged in a ring configuration adjacent to an inside surface of the inner pipe (Figures 1-2 item 12), and wherein each pair of adjacent receiver elements (Figures 1-2 item 32) in at least one receiver element ring (Figures 1-2 item 32) in the sequential array is associated with one of the one or more focusing devices (Figures 1-2 item 28) that is disposed between said pair of adjacent receiver elements (Figures 1-2 item 32) along a circumferential direction of said at least one receiver element ring (Figures 1-2 item 32). 10. Regarding claim 6, Yu teaches the device of claim 1, wherein the two concentric pipes (Figures 1-2 item 12 & 14) are part of a pipeline network. wherein the one or more EM receivers (Figures 1-2 item 32). 11 Regarding claim 7, Yu teaches the device of claim 1, wherein the device is embedded in a downhole logging tool (Figures 1-2 item 12 & 14 casing 14 may be compressed by the downhole environment in Paragraph [0035]), and wherein the two concentric pipes (Figures 1-2 item 12 & 14) are part of a wellbore casing (Figures 1-2 item 12 discloses tubing 12 may be made of any suitable material for use in a wellbore in Paragraph [0029]), 12. Regarding claim 8, Yu teaches a system for measuring a wall thickness of two concentric pipes, comprising: a device (Figures 1-2 item 2 discloses an inspection system 2) comprising: an electromagnetic (EM) transmitter (Figures 1-2 item 28 discloses transmitter 28 may operate to generate a focused static magnetic field in Paragraph [0031]) configured to emit magnetic fluxes toward one or more EM receivers (Figures 1-2 item 32 discloses receivers 32 may be disposed on core 30. Receivers 32in Paragraph [0033]); one or more focusing devices (Figures 1-2 item 28 discloses transmitter 28 may operate to generate a focused static magnetic field in Paragraph [0031]) configured to focus the emitted magnetic fluxes to compress and guide the emitted magnetic fluxes further toward the one or more EM receivers (Figures 1-2 item 32 discloses receivers 32 may be disposed on core 30. Receivers 32in Paragraph [0033]); and the one or more EM receivers (Figures 1-2 item 32 discloses receivers 32 may be disposed on core 30. Receivers 32in Paragraph [0033]) configured to measure the compressed and guided magnetic fluxes to generate a measured flux for providing to a pipe anomaly analyzer (Figures 1-2 item 4 discloses inspection device 4 Inspection device 4 may be designed to detect defects and measure wall thickness in Paragraph [0029]), a launching station (Figures 1-2 item 10 discloses with service device 10 in Paragraph [0026]) configured to launch the device within an inner pipe of the two concentric pipes (Figures 1-2 item 12 & 14), wherein said emitting, focusing (Figures 1-2 item 28), and measuring (Figures 1-2 item 4) are in response to said launching the device (Figures 1-2 item 10 discloses with service device 10 in Paragraph [0026]); and a pipe anomaly analyzer (Figures 1-2 item 4 discloses inspection device 4 Inspection device 4 may be designed to detect defects and measure wall thickness in Paragraph [0029]) configured to determine, based on the measured flux, the wall thickness of an outer pipe of the two concentric pipes (Figures 1-2 item 12 & 14). 13. Regarding claim 9, Yu teaches the system of claim 8, wherein the one or more focusing devices (Figures 1-2 item 28) comprise one or more of a magnet, an electrical coil (Figures 1-2 item 28 discloses 28 may comprise a rare earth magnet, coil, in Paragraph [0031]), and ferromagnetic material. 14. Regarding claim 10, Yu teaches the system of claim 8, wherein the one or more focusing devices (Figures 1-2 item 28) comprise a first focusing device (Figures 1-2 item 28) disposed between the EM transmitter (Figures 1-2 item 28) and the one or more EM receivers (Figures 1-2 item 32) along a longitudinal direction of the two concentric pipe (Figures 1-2 item 12 & 14) 15. Regarding claim 11, Yu teaches the system of claim 10, wherein the one or more EM receivers (Figures 1-2 item 32) comprise a sequential array of receiver element rings (Figures 1-2 item 32) along the longitudinal direction of the two concentric pipes (Figures 1-2 item 12 & 14), each receiver element ring (Figures 1-2 item 32) in the sequential array comprising receiver elements arranged in a ring configuration adjacent to an inside surface of the inner pipe (Figures 1-2 item 12), and wherein each pair of adjacent receiver element rings (Figures 1-2 item 32) within the sequential array is associated with one of the one or more focusing devices (Figures 1-2 item 28) that is disposed between said pair of adjacent receiver element rings (Figures 1-2 item 32) along the longitudinal direction of the two concentric pipes (Figures 1-2 item 12 & 14). 16. Regarding claim 12, Yu teaches the system of claim 10, wherein the one or more EM receivers (Figures 1-2 item 32) form a sequential array of receiver element rings (Figures 1-2 item 32) along the longitudinal direction of the two concentric pipes (Figures 1-2 item 12 & 14), each receiver element ring (Figures 1-2 item 32) in the sequential array comprising receiver elements arranged in a ring configuration adjacent to an inside surface of the inner pipe (Figures 1-2 item 12), and wherein each pair of adjacent receiver elements (Figures 1-2 item 32) in at least one receiver element ring in the sequential array is associated with one of the one or more focusing devices (Figures 1-2 item 28) that is disposed between said pair of adjacent receiver elements (Figures 1-2 item 32) along a circumferential direction of said at least one receiver element ring (Figures 1-2 item 32). 17. Regarding claim 13, Yu teaches the system of claim 8, wherein the device comprises a pipe inspection gauge (pig) (Figures 1-2 item 2 & 4 discloses inspection device 4 Inspection device 4 may be designed to detect defects and measure wall thickness in Paragraph [0029]), and wherein the two concentric pipes (Figures 1-2 item 12 & 14) are part of a pipeline network. 18. Regarding claim 14, Yu teaches the system of claim 8, wherein the device (Figures 1-2 item 4 discloses inspection device 4 Inspection device 4 may be designed to detect defects and measure wall thickness in Paragraph [0029]) is embedded in a downhole logging tool (Figures 1-2 item 4 discloses inspection device 4 and/or telemetry module 8 inside tubing 12.), and wherein the two concentric pipes (Figures 1-2 item 12 & 14) are part of a wellbore casing (Figures 1-2 item 12 discloses tubing 12 may be made of any suitable material for use in a wellbore in Paragraph [0029]). 19. Regarding claim 15, Yu teaches a method for measuring a wall thickness of two concentric pipes, comprising: launching a pipe inspection gauge (pig) (Figures 1-2 item 2 & 4 discloses inspection device 4 Inspection device 4 may be designed to detect defects and measure wall thickness in Paragraph [0029]) within an inner pipe (Figures 1-2 item 12 discloses may be used to position inspection device 4 and/or telemetry module 8 inside tubing 12 Paragraph [0028]) of the two concentric pipes (Figures 1-2 item 14 discloses determine the arrangement of tubing 12 in relation to casing 14 Paragraph [0035]); emitting, using an electromagnetic (EM) transmitter (Figures 1-2 item 28 discloses transmitter 28 may operate to generate a focused static magnetic field in Paragraph [0031]) of the pig, magnetic fluxes toward one or more EM receivers of the pig (Figures 1-2 item 32 discloses receivers 32 may be disposed on core 30. Receivers 32in Paragraph [0033]); focusing, using one or more focusing devices (Figures 1-2 item 28 discloses transmitter 28 may operate to generate a focused static magnetic field in Paragraph [0031]), the emitted magnetic fluxes to compress and guide the emitted magnetic fluxes through the inner pipe (Figures 1-2 item 12 discloses may be used to position inspection device 4 and/or telemetry module 8 inside tubing 12 Paragraph [0028]) toward an outer pipe (Figures 1-2 item 14) and increase a signal to noise ratio of the one or more EM receivers (Figures 1-2 item 32 discloses receivers 32 may be disposed on core 30. Receivers 32in Paragraph [0033]); measuring, using the one or more EM receivers (Figures 1-2 item 32 discloses receivers 32 may be disposed on core 30. Receivers 32in Paragraph [0033]), the compressed and guided magnetic fluxes to generate a measured flux for providing to a pipe anomaly analyzer (Figures 1-2 item 4 discloses inspection device 4 Inspection device 4 may be designed to detect defects and measure wall thickness in Paragraph [0029]), and determining, using the pipe anomaly analyzer (Figures 1-2 item 4 discloses inspection device 4 Inspection device 4 may be designed to detect defects and measure wall thickness in Paragraph [0029]) and based on the measured flux, the wall thickness of the outer pipe of the two concentric pipes (Figures 1-2 item 14 discloses determine the arrangement of tubing 12 in relation to casing 14 Paragraph [0035]). 20. Regarding claim 16, Yu teaches the method of claim 15, wherein the one or more focusing devices (Figures 1-2 item 28) comprise one or more of a magnet, an electrical coil (Figures 1-2 item 28 discloses 28 may comprise a rare earth magnet, coil, in Paragraph [0031]), and ferromagnetic material. 21. Regarding claim 17, Yu teaches the method of claim 15, wherein the one or more focusing devices (Figures 1-2 item 28 discloses transmitter 28 may operate to generate a focused static magnetic field in Paragraph [0031]) comprise a first focusing device disposed between the EM transmitter (Figures 1-2 item 28) and the one or more EM receivers (Figures 1-2 item 32) along a longitudinal direction of the two concentric pipes (Figures 1-2 item 12& 14). 22. Regarding claim 18, Yu teaches the method of claim 17, wherein the one or more EM receivers (Figures 1-2 item 32 discloses receivers 32 may be disposed on core 30. Receivers 32 in Paragraph [0033]) comprise a sequential array of receiver element rings (Figures 1-2 item 32) along the longitudinal direction of the two concentric pipes (Figures 1-2 item 12 & 14), each receiver element ring (Figures 1-2 item 32) in the sequential array comprising receiver elements (Figures 1-2 item 32) arranged in a ring configuration adjacent to an inside surface of the inner pipe (Figures 1-2 item 12), and wherein each pair of adjacent receiver element rings (Figures 1-2 item 32) within the sequential array is associated with one of the one or more focusing devices (Figures 1-2 item 28) that is disposed between said pair of adjacent receiver element rings (Figures 1-2 item 32) along the longitudinal direction of the two concentric pipes (Figures 1-2 item 12 & 14). 23. Regarding claim 19, Yu teaches the method of claim 17, wherein the one or more EM receivers (Figures 1-2 item 32) form a sequential array of receiver element rings (Figures 1-2 item 32) along the longitudinal direction of the two concentric pipes (Figures 1-2 item 12 & 14), each receiver element ring (Figures 1-2 item 32) in the sequential array comprising receiver elements (Figures 1-2 item 32) arranged in a ring configuration adjacent to an inside surface of the inner pipe (Figures 1-2 item 12), and wherein each pair of adjacent receiver elements (Figures 1-2 item 32) in at least one receiver element ring (Figures 1-2 item 32) in the sequential array is associated with one of the one or more focusing devices (Figures 1-2 item 28) that is disposed between said pair of adjacent receiver elements (Figures 1-2 item 32) along a circumferential direction of said at least one receiver element ring (Figures 1-2 item 32). 24. Regarding claim 20, Yu teaches the method of claim 15, wherein the two concentric pipes (Figures 1-2 item 12 & 14) are part of a pipeline network or part of a wellbore casing (Figures 1-2 item 12 discloses tubing 12 may be made of any suitable material for use in a wellbore in Paragraph [0029]), Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to BRENT J ANDREWS whose telephone number is (571)272-6101. The examiner can normally be reached 10am-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, Judy Nguyen can be reached at (571)272-2258. 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. /BRENT J ANDREWS/Examiner, Art Unit 2858 /NEEL D SHAH/Primary Examiner, Art Unit 2858
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Prosecution Timeline

Mar 29, 2024
Application Filed
Jun 01, 2026
Non-Final Rejection mailed — §102 (current)

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Prosecution Projections

1-2
Expected OA Rounds
78%
Grant Probability
99%
With Interview (+28.4%)
3y 2m (~10m remaining)
Median Time to Grant
Low
PTA Risk
Based on 313 resolved cases by this examiner. Grant probability derived from career allowance rate.

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