For the Inventor, By the Inventor

Enter assignee name

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 leading manufacturer of efficient and environmentally friendly aircraft engines. With a focus on innovation and sustainability, the company designs and produces high-performance diesel engines for a variety of aviation applications. Deltahawk Engines is committed to providing reliable and cost-effective solutions for the aviation industry.

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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