For the Inventor, By the Inventor

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Chicago, IL, United States of America

Littlefuse, Inc.

USPTO Granted Patents = 37

% Expired Patents = 8.1

Trademarks = 4

Forward Citations = 475

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74 inventors (with patents filed for the assignee):

Tom J Hall (3 out of 8 patents)

Michael J Weber (3 out of 4 patents)

Julio Cesar Urrea (3 out of 28 patents)

4. Edwin James Harris (3 out of 24 patents)

5. Matthew Peter Galla (2 out of 27 patents)

6. Stephen J Whitney (2 out of 27 patents)

7. Seibang Oh (2 out of 27 patents)

8. Kerri Michelle Hood (2 out of 9 patents)

9. Neil McLoughlin (2 out of 9 patents)

10. Louis Rector (2 out of 6 patents)

11. John M Shreeve (2 out of 5 patents)

12. Derek A Nicker (2 out of 6 patents)

13. Stephen P Cowman (2 out of 7 patents)

14. Hugh M Hyatt (2 out of 6 patents)

15. Katherine M McGuire (2 out of 10 patents)

Core Competencies:

Power Semiconductor Module

Isolated Fuse

Synchronous Rectifier

Fuse Assembly

Varistor

Arc Flash Prevention

Overvoltage Protection

Electrical Circuits

PTC Devices

Surge Resistor

Fuse Holder

Current Transformer

37 patents: Sort by Forward Citations

1. 12581990 - Metal tab for power semiconductor module (2026-03-17),

2. 11636994 - Attaching an isolated single stud fuse to an electrical device (2023-04-25),

3. 10601331 - Forward converter with self-driven BJT synchronous rectifier (2020-03-24),

4. 10483246 - Power device cassette with auxiliary emitter contact (2019-11-19),

5. 10218164 - Method of forming wire overmold device (2019-02-26),

6. 10199192 - Bi-stable electrical solenoid switch (2019-02-05),

7. 10177081 - Thyristor and thermal switch device and assembly techniques therefor (2019-01-08),

8. 9695334 - Oxygen barrier compositions and related methods (2017-07-04),

9. 9620318 - Reflowable circuit protection device (2017-04-11),

10. 9415730 - Flexible power distribution module cover assembly (2016-08-16),

11. 9209617 - Device and method for preventing arc flashes (2015-12-08),

12. 9117615 - Double wound fusible element and associated fuse (2015-08-25),

13. 8847573 - AC/DC current transformer (2014-09-30),

14. 8665056 - Fuse assembly (2014-03-04),

15. 8077008 - Varistor and production method (2011-12-13),

Littelfuse, Inc. is a global leader in circuit protection, offering a wide range of products that safeguard electronic devices and systems across various industries. The company specializes in developing innovative solutions for automotive, industrial, and consumer electronics, focusing on enhancing safety and reliability. With a commitment to advancing technology, Littelfuse invests in research and development to create cutting-edge components that address the evolving needs of its diverse clientele worldwide.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

Littlefuse, Inc.

37 Patents

#128 in Chicago, IL

#515 in Illinois

#9,241 in US

#18,238 in the World

Chicago, IL, United States of America

Littlefuse, Inc.

Forward Citations = 475

74 inventors:

Tom J Hall (3 out of 8 patents)

Michael J Weber (3 out of 4 patents)

Julio Cesar Urrea (3 out of 28 patents)

4. Edwin James Harris (3 out of 24 patents)

5. Matthew Peter Galla (2 out of 27 patents)

Please report any incorrect information to [email protected]

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