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For the Inventor, By the Inventor

Cleveland, OH, United States of America

Keithley Instruments, Inc.


USPTO Granted Patents = 144



Trademarks = 11

Forward Citations = 854

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86 inventors (with patents filed for the assignee):

goldMedal Wayne C Goeke (44 out of 46 patents)

silverMedal Gregory Sobolewski (26 out of 26 patents)

bronzeMedal James A Niemann (16 out of 17 patents)

4.  John G Banaska (11 out of 11 patents)

5.  William Knauer (11 out of 11 patents)

6.  Martin J Rice (11 out of 11 patents)

7.  George John Polly (10 out of 12 patents)

8.  Brian Patrick Frackelton (9 out of 16 patents)

9.  Michael D Rayman (6 out of 6 patents)

10.  Gregory Roberts, Ii (5 out of 5 patents)

11.  William C Weeman (5 out of 5 patents)

12.  Lawrence J Kizlik (5 out of 5 patents)

13.  Alexander N Pronin (4 out of 4 patents)

14.  Kevin Cawley (4 out of 4 patents)

15.  Matthew Holtz (4 out of 4 patents)


Core Competencies:
Source Measure Unit
High Current Measurement
Digital Loop Control
Electrical Load Estimation
Power Supply Design
Current Leakage Mitigation
Graphical User Interface
Temperature Measurement
Impedance Measurement
Device Characterization
Dynamic Instrument Interface
High-Speed Switching

144 patents:

1. 12498414 - Unified measurement system for static and dynamic characterization of a device under test (2025-12-16),
2. 12498409 - Correcting for load resistance when making I-V measurements with constant drain voltage on power MOSFETS (2025-12-16),
3. 12363853 - Direct instrument-to-instrument communication without using a system controller (2025-07-15),
4. 12306209 - High current extension for a dual-stage source measure unit (2025-05-20),
5. 12265115 - Digital loop dual-stage source measure unit (2025-04-01),
6. 12241939 - Estimation of unknown electronic load (2025-03-04),
7. 12050243 - Safety container for high power device testing over a range of temperatures (2024-07-30),
8. 11971434 - Power source with error detection (2024-04-30),
9. 11959937 - Triaxial power and control systems and methods (2024-04-16),
10. 11927605 - Interconnect system with high current and low leakage capability (2024-03-12),
11. 11853089 - Expanded shunt current source (2023-12-26),
12. 11768248 - Estimation of unknown electronic load (2023-09-26),
13. 11755440 - User interface and method to configure sourcing and measurement timing (2023-09-12),
14. 11705894 - Pulsed high current technique for characterization of device under test (2023-07-18),
15. 11668733 - Multi-stage current measurement architecture (2023-06-06),
Keithley Instruments, Inc. is a leading provider of precision electronic measurement instruments and systems. They offer solutions used by engineers and scientists in the design, test, and production of various electronics. With a focus on precision and reliability, their product range includes instruments for electrical measurement, signal generation, and data acquisition. Keithley Instruments is committed to delivering innovative solutions and exceptional customer support.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 23 2025

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144 Patents

#21 in Cleveland, OH

#117 in Ohio

#2,622 in US

#5,505 in the World

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Cleveland, OH, United States of America

Keithley Instruments, Inc.

Forward Citations = 854

86 inventors:

goldMedal Wayne C Goeke (44 out of 46 patents)

silverMedal Gregory Sobolewski (26 out of 26 patents)

bronzeMedal James A Niemann (16 out of 17 patents)

4.  John G Banaska (11 out of 11 patents)

5.  William Knauer (11 out of 11 patents)

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