For the Inventor, By the Inventor

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Racine, WI, United States of America

Deltahawk Engines, Inc.

USPTO Granted Patents = 15

% Expired Patents = 6.7

EPO Patents = 2

Trademarks = 2

Forward Citations = 20

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15 inventors (with patents filed for the assignee):

Douglas A Doers (6 out of 8 patents)

Paul Olesen (3 out of 3 patents)

Matthew Daniel De Lise (3 out of 3 patents)

4. Aaron Gamache Foege (3 out of 3 patents)

5. Robert A Greco (2 out of 5 patents)

6. Dennis Raymond Webb (2 out of 2 patents)

7. Alexander Joeseph Boho (2 out of 2 patents)

8. Elijah John Dzurino (2 out of 2 patents)

9. David Delory Driscoll (1 out of 9 patents)

10. Dean P Bergman (1 out of 3 patents)

11. Graydon Robert Hegge (1 out of 1 patent)

12. Frank Matthew Graczyk (1 out of 1 patent)

13. Christopher McGray (1 out of 1 patent)

14. Louis Francis Funk (1 out of 1 patent)

15. Dana Marie Merkitch (1 out of 1 patent)

15 patents: Sort by Forward Citations

1. 12650106 - Port assembly for 2-stroke diesel engine (2026-06-09),

2. 12435678 - Engine cylinder with liner (2025-10-07),

3. 12429017 - Air shut-off valve for an engine (2025-09-30),

4. 12292013 - Piston assembly with gapless oil control ring (2025-05-06),

5. 12110836 - Engine cylinder with liner (2024-10-08),

6. 12085048 - Air shut-off valve for an engine (2024-09-10),

7. 12031463 - Separator for liquid and gas (2024-07-09),

8. 11835135 - Piston assembly with wrist pin cap (2023-12-05),

9. 11719182 - Engine cylinder with liner (2023-08-08),

10. 10711681 - Two-cycle diesel engine configured for operation with high temperature combustion chamber surfaces (2020-07-14),

11. 10458307 - Two-cycle diesel engine configured for operation with high temperature combustion chamber surfaces (2019-10-29),

12. 8371279 - Crankcase pressure regulator for an internal combustion engine (2013-02-12),

13. 7836815 - Lubricant-cooled and wristpin lubricating piston (2010-11-23),

14. RE41335 - Internal combustion engine (2010-05-17),

15. RE40500 - Internal combustion engine (2008-09-15),

Deltahawk Engines, Inc. is a pioneering company based in Racine, Wisconsin, specializing in the development and manufacturing of advanced engine technologies. The company focuses on innovative solutions for the aviation and automotive sectors, particularly in the realm of diesel engines. Deltahawk's research emphasizes efficiency, performance, and sustainability, aiming to provide reliable power solutions that meet the evolving needs of the transportation industry. Their commitment to engineering excellence positions them as a key player in the engine technology landscape.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

15 Patents

#21 in Racine, WI

#486 in Wisconsin

#21,026 in US

#39,846 in the World

Racine, WI, United States of America

Deltahawk Engines, Inc.

Forward Citations = 20

15 inventors:

Douglas A Doers (6 out of 8 patents)

Paul Olesen (3 out of 3 patents)

Matthew Daniel De Lise (3 out of 3 patents)

4. Aaron Gamache Foege (3 out of 3 patents)

5. Robert A Greco (2 out of 5 patents)

Please report any incorrect information to [email protected]

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