For the Inventor, By the Inventor

Enter assignee name

Hiram, OH, United States of America

Duramax Marine, LLC

USPTO Granted Patents = 21

CIPO Patents = 3

EPO Patents = 2

Trademarks = 17

Forward Citations = 130

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12 inventors (with patents filed for the assignee):

Roy L Orndorff, Jr (9 out of 30 patents)

Michael W Brakey (7 out of 7 patents)

Jeffrey S Leeson (7 out of 9 patents)

4. P Charles Miller, Jr (5 out of 5 patents)

5. Frank E Horvat (3 out of 3 patents)

6. Eric K Peoples (3 out of 3 patents)

7. Philip Paul Brady (2 out of 4 patents)

8. Warren Keith Langston (2 out of 3 patents)

9. George MacDonald (2 out of 3 patents)

10. Steven Rericha (1 out of 1 patent)

11. Richard C Spangler (1 out of 1 patent)

12. Joseph Harry Andulics (1 out of 10 patents)

13. P Charles Miller (0 patent)

14. P Charles Miller (0 patent)

21 patents: Sort by Forward Citations

1. 10697703 - Marine heat exchanger (2020-06-30),

2. 10179637 - Turbulence enhancer for keel cooler (2019-01-15),

3. 9957030 - Turbulence enhancer for keel cooler (2018-05-01),

4. 8376029 - Keel cooler with fluid flow diverter (2013-02-19),

5. 7490992 - Integral bearing unit made from a slippery/polymer alloy (2009-02-17),

6. 7481262 - Keel cooler with fluid flow diverter (2009-01-27),

7. 7328740 - Heat exchanger with beveled header (2008-02-12),

8. 7290932 - Stave bearing assembly and stave for a bearing assembly (2007-11-06),

9. 7201213 - Keel cooler with fluid flow diverter (2007-04-10),

10. 7044194 - Heat exchanger with beveled header (2006-05-16),

11. 6921206 - Stave bearing assembly and stave for a bearing assembly (2005-07-26),

12. 6896037 - Keel cooler with fluid flow diverter (2005-05-24),

13. 6866271 - Marine shaft seal with lip seal, bearing and gasket (2005-03-15),

14. 6682804 - Fender protective structure (2004-01-27),

15. 6648510 - SPA super demountable bearing (2003-11-18),

Duramax Marine, LLC is a leading manufacturer of marine propulsion products. With over 40 years of experience, we provide high-quality marine components and systems to a wide range of customers around the world. Our products include propellers, shafting systems, bearings, and seals, all designed to enhance the performance and reliability of marine vessels. At Duramax Marine, we strive to deliver innovative solutions that meet the evolving needs of the marine industry.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

21 Patents

#1 in Hiram, OH

#645 in Ohio

#15,181 in US

#29,080 in the World

Hiram, OH, United States of America

Duramax Marine, LLC

Forward Citations = 130

12 inventors:

Roy L Orndorff, Jr (9 out of 30 patents)

Michael W Brakey (7 out of 7 patents)

Jeffrey S Leeson (7 out of 9 patents)

4. P Charles Miller, Jr (5 out of 5 patents)

5. Frank E Horvat (3 out of 3 patents)

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