For the Inventor, By the Inventor

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Minneapolis, MN, United States of America

Onan Corporation

USPTO Granted Patents = 68

EPO Patents = 1

Trademarks = 3

Forward Citations = 1,773

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82 inventors (with patents filed for the assignee):

David J Koenig (9 out of 34 patents)

Mark H Schultz (7 out of 10 patents)

Mark S Lent (6 out of 40 patents)

4. Rickie A Evenson (4 out of 6 patents)

5. Stephen M Clancey (4 out of 5 patents)

6. Anthony T Klejeski (4 out of 8 patents)

7. Loren L Rademacher (4 out of 4 patents)

8. Paul F Huffman (4 out of 4 patents)

9. David A Overland (4 out of 4 patents)

10. Jerome J Lemmer (4 out of 4 patents)

11. Curtis D Leaf (4 out of 4 patents)

12. Robert P Koziara (4 out of 4 patents)

13. Dale F Seeley (3 out of 48 patents)

14. Paul H Plahn (3 out of 9 patents)

15. John E Morley (3 out of 3 patents)

Core Competencies:

Mobile Energy Management

Load Power Fault Protection

Auxiliary Power Unit

Transfer Switch

Generator Control

Vibration Isolation

Electrical Generator

Carburetor System

Thermal Reactor

AC to AC Converter

Engine Efficiency

Power Supply Assembly

68 patents: Sort by Forward Citations

1. 6965818 - Mobile energy management system (2005-11-15),

2. 6919518 - Phase flux barriers for transfer switch (2005-07-19),

3. 6798627 - Engine generator set systems and methods providing load power fault protection (2004-09-28),

4. 6765157 - Transfer switch with improved actuator (2004-07-20),

5. 6737762 - Generator with DC boost for uninterruptible power supply system or for enhanced load pickup (2004-05-18),

6. 6700087 - Arc chute assembly (2004-03-02),

7. 6639331 - Parallel generator power system (2003-10-28),

8. 6534737 - Contact closing speed limiter for a transfer switch (2003-03-18),

9. 6355986 - Generator set control apparatus and method to avoid vehicle resonances (2002-03-12),

10. 5815058 - Contact enhancement apparatus for an electric switch (1998-09-29),

11. 5784267 - Quasi-sine wave and stepped square wave AC to AC converter (1998-07-21),

12. 5771682 - Thermal reactor (1998-06-30),

13. 5717273 - Insulating armature end turn cap (1998-02-10),

14. 5701070 - Electrical generator damage protection apparatus and method with circuit (1997-12-23),

15. 5652416 - Mechanically held electrically or manually operated switch (1997-07-29),

Onan Corporation is a global technology company specializing in manufacturing and distribution of power generation and electrical control solutions. With over 50 years of industry experience, Onan offers a wide range of products and services including diesel and natural gas generators, automatic transfer switches, paralleling switchgear, and remote monitoring systems. Onan's advanced technology, reliability, and customer-centric approach have made it a trusted partner for various industries including telecommunications, data centers, healthcare, and commercial applications.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Sep 15 2026

68 Patents

#32 in Minneapolis, MN

#151 in Minnesota

#5,363 in US

#10,866 in the World

Minneapolis, MN, United States of America

Onan Corporation

Forward Citations = 1,773

82 inventors:

David J Koenig (9 out of 34 patents)

Mark H Schultz (7 out of 10 patents)

Mark S Lent (6 out of 40 patents)

4. Rickie A Evenson (4 out of 6 patents)

5. Stephen M Clancey (4 out of 5 patents)

Please report any incorrect information to [email protected]

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