For the Inventor, By the Inventor

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Boulder, CO, United States of America

Thomas Engine Company, LLC

USPTO Granted Patents = 15

% Expired Patents = 100.0

EPO Patents = 1

Forward Citations = 77

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7 inventors (with patents filed for the assignee):

Randall R Gaiser (5 out of 20 patents)

Charles Russell Thomas (4 out of 11 patents)

Bret R Hauser (4 out of 12 patents)

4. Anton Polt (3 out of 3 patents)

5. David Pratt Branyon (2 out of 18 patents)

6. Michael Hold (1 out of 1 patent)

7. Randall R Geiser (1 out of 1 patent)

8. Anton Plot (0 patent)

15 patents: Sort by Forward Citations

1. 8534241 - CAM plate bearings for barrel engine (2013-09-17),

2. 8522732 - Flywheel for barrel engine (2013-09-03),

3. 8079336 - Compact valve actuation mechanism for barrel internal combustion engines (2011-12-20),

4. 8056542 - Intake system for a barrel internal combustion engine (2011-11-15),

5. 8015956 - Piston assembly for barrel engine (2011-09-13),

6. 7673607 - Tappet carrier for barrel engine (2010-03-09),

7. 7654234 - Barrel engine block assembly (2010-02-02),

8. 7600493 - Spline drive and cam shafts for barrel engines (2009-10-13),

9. 7581518 - Coaxial oil pump for barrel engines (2009-09-01),

10. 7469662 - Homogeneous charge compression ignition engine with combustion phasing (2008-12-30),

11. 7464673 - Single-ended barrel engine with double-ended, double roller pistons (2008-12-16),

12. 6899065 - Radial-valve gear apparatus for barrel engine (2005-05-31),

13. 6834636 - Single-ended barrel engine with double-ended, double roller pistons (2004-12-28),

14. 6698394 - Homogenous charge compression ignition and barrel engines (2004-03-02),

15. 6662775 - Integral air compressor for boost air in barrel engine (2003-12-16),

Thomas Engine Company, LLC, based in Boulder, Colorado, specializes in the development and manufacturing of advanced engine technologies. The company focuses on creating innovative solutions for various applications, including aerospace and automotive sectors. With a commitment to enhancing performance and efficiency, Thomas Engine leverages cutting-edge research in propulsion systems and energy conversion. Their expertise positions them as a key player in the evolving landscape of engine technology, catering to both commercial and industrial needs.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

15 Patents

#85 in Boulder, CO

#430 in Colorado

#21,026 in US

#39,846 in the World

Boulder, CO, United States of America

Thomas Engine Company, LLC

Forward Citations = 77

7 inventors:

Randall R Gaiser (5 out of 20 patents)

Charles Russell Thomas (4 out of 11 patents)

Bret R Hauser (4 out of 12 patents)

4. Anton Polt (3 out of 3 patents)

5. David Pratt Branyon (2 out of 18 patents)

Please report any incorrect information to [email protected]

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