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For the Inventor, By the Inventor

Chicago, IL, United States of America

S&c Electric Company


USPTO Granted Patents = 432



Trademarks = 38

Forward Citations = 2,889

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240 inventors (with patents filed for the assignee):

goldMedal Raymond P O'Leary (37 out of 38 patents)

silverMedal Roy T Swanson (31 out of 31 patents)

bronzeMedal Henry W Scherer (31 out of 31 patents)

4.  Thomas J Tobin (29 out of 29 patents)

5.  Bruce A Biller (25 out of 25 patents)

6.  Michael G Ennis (24 out of 25 patents)

7.  John C Opfer (24 out of 24 patents)

8.  Edward J Rogers (24 out of 24 patents)

9.  Leonard V Chabala (22 out of 23 patents)

10.  Alejandro Montenegro (20 out of 20 patents)

11.  David G Porter (19 out of 28 patents)

12.  Henry W Kowalyshen (19 out of 19 patents)

13.  Yoav Sharon (18 out of 18 patents)

14.  Joel A Ramos (18 out of 18 patents)

15.  David M Evans (18 out of 19 patents)


Core Competencies:
Pulse Catching
Vacuum Interrupter
Adaptive Impedance Protection
Powerline Communications
Fault Location
Energy Harvesting
Transformer Protection
Dynamic Graphs
Anti-Islanding Protection
Utility Distribution
Recloser Technology
Current Transformers

432 patents:

1. 12449467 - Pulse catching (2025-10-21),
2. 12444929 - Adaptive impedance protection (2025-10-14),
3. 12444926 - System and method for eliminating nuisance fuse operation associated with medium voltage distribution transformers (2025-10-14),
4. 12444558 - System and method for point on wave closing of a vacuum interrupter (2025-10-14),
5. 12436180 - Auto squelch on powerline communications (PLC) (2025-10-07),
6. 12431701 - Dropout recloser (2025-09-30),
7. 12381052 - Vacuum interrupter anti-bounce dampener (2025-08-05),
8. 12294221 - Anti-islanding protection and non-exporting tariff support (2025-05-06),
9. 12294216 - Dynamic graph for data propagation (2025-05-06),
10. 12266925 - Transmission line fault location, isolation and system restoration (FLISR) system (2025-04-01),
11. 12266915 - Series Z-source circuit breaker with pulse-testing capability (2025-04-01),
12. 12249470 - Method and apparatus for energy harvesting from a current source (2025-03-11),
13. 12237668 - Fast fault detector (2025-02-25),
14. 12230440 - Magnetic latching actuator (2025-02-18),
15. 12205784 - Triggered vacuum gap that controllably sustains a vacuum arc through current zeros (2025-01-21),
S&C Electric Company is a global provider of equipment and services for electric power systems. With over a century of experience, S&C has been a leader in developing innovative solutions for power reliability, distribution automation, and renewable energy integration. Their diverse portfolio includes products such as power transformers, switchgear, energy storage systems, and microgrids. S&C's mission is to create a smarter, cleaner and more reliable grid to meet the evolving needs of the energy industry.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 9 2025

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432 Patents

#21 in Chicago, IL

#62 in Illinois

#1,054 in US

#2,120 in the World

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Chicago, IL, United States of America

S&c Electric Company

Forward Citations = 2,889

240 inventors:

goldMedal Raymond P O'Leary (37 out of 38 patents)

silverMedal Roy T Swanson (31 out of 31 patents)

bronzeMedal Henry W Scherer (31 out of 31 patents)

4.  Thomas J Tobin (29 out of 29 patents)

5.  Bruce A Biller (25 out of 25 patents)

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