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For the Inventor, By the Inventor

Racine, WI, United States of America

Deltahawk Engines, Inc.


USPTO Granted Patents = 14


Trademarks = 3

Forward Citations = 18

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13 inventors (with patents filed for the assignee):

goldMedal Douglas A Doers (6 out of 8 patents)

silverMedal Matthew Daniel De Lise (3 out of 3 patents)

bronzeMedal Robert A Greco (2 out of 5 patents)

4.  Paul Olesen (2 out of 2 patents)

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

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

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

8.  Aaron Gamache Foege (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.  Dennis R Webb (2 patents)

15.  William J Cranmer (0 patent)


14 patents:

1. 12435678 - Engine cylinder with liner (2025-10-07),
2. 12429017 - Air shut-off valve for an engine (2025-09-30),
3. 12292013 - Piston assembly with gapless oil control ring (2025-05-06),
4. 12110836 - Engine cylinder with liner (2024-10-08),
5. 12085048 - Air shut-off valve for an engine (2024-09-10),
6. 12031463 - Separator for liquid and gas (2024-07-09),
7. 11835135 - Piston assembly with wrist pin cap (2023-12-05),
8. 11719182 - Engine cylinder with liner (2023-08-08),
9. 10711681 - Two-cycle diesel engine configured for operation with high temperature combustion chamber surfaces (2020-07-14),
10. 10458307 - Two-cycle diesel engine configured for operation with high temperature combustion chamber surfaces (2019-10-29),
11. 8371279 - Crankcase pressure regulator for an internal combustion engine (2013-02-12),
12. 7836815 - Lubricant-cooled and wristpin lubricating piston (2010-11-23),
13. RE41335 - Internal combustion engine (2010-05-17),
14. 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.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 23 2025

14 Patents

#17 in Racine, WI

#499 in Wisconsin

#21,600 in US

#40,903 in the World

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Racine, WI, United States of America

Deltahawk Engines, Inc.

Forward Citations = 18

13 inventors:

goldMedal Douglas A Doers (6 out of 8 patents)

silverMedal Matthew Daniel De Lise (3 out of 3 patents)

bronzeMedal Robert A Greco (2 out of 5 patents)

4.  Paul Olesen (2 out of 2 patents)

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

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