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For the Inventor, By the Inventor

Minneapolis, MN, United States of America

Onan Corporation


USPTO Granted Patents = 68


Trademarks = 3

Forward Citations = 1,753

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82 inventors (with patents filed for the assignee):

goldMedal David J Koenig (9 out of 32 patents)

silverMedal Mark H Schultz (7 out of 10 patents)

bronzeMedal Mark S Lent (6 out of 39 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 47 patents)

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

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


Core Competencies:
Mobile Energy Management
Engine Generator Set
Load Power Fault Protection
Transfer Switch Actuator
DC Boost Generator
Parallel Generator System
Electrical Generator Protection
Auxiliary Power Unit
Microprocessor Based Controller
Vibration Isolation System
Automatic Carburetor System
Air Intake Temperature Regulator

68 patents:

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.

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USPTO Data Jan 1 1976 - Dec 30 2025

68 Patents

#32 in Minneapolis, MN

#146 in Minnesota

#5,155 in US

#10,466 in the World

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Minneapolis, MN, United States of America

Onan Corporation

Forward Citations = 1,753

82 inventors:

goldMedal David J Koenig (9 out of 32 patents)

silverMedal Mark H Schultz (7 out of 10 patents)

bronzeMedal Mark S Lent (6 out of 39 patents)

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

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

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