For the Inventor, By the Inventor

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Dayton, OH, United States of America

Dayton-Phoenix Group, Inc.

USPTO Granted Patents = 17

% Expired Patents = 35.3

Forward Citations = 59

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18 inventors (with patents filed for the assignee):

Joseph A Zahora (10 out of 10 patents)

Johnny D Yu (4 out of 4 patents)

John W Murphy (4 out of 6 patents)

4. Gale A Kooken (3 out of 3 patents)

5. Roger D Fleming (3 out of 3 patents)

6. William R Compton (2 out of 2 patents)

7. Justin P Widmer (2 out of 2 patents)

8. Gabriel E Widmer (2 out of 2 patents)

9. Bryan E Ladd (2 out of 2 patents)

10. Xung T Bui (2 out of 2 patents)

11. Brad S Bryant (2 out of 2 patents)

12. Harley J Weldy (1 out of 1 patent)

13. Bradley S Bryant (1 out of 1 patent)

14. Ralph M Gutman (1 out of 2 patents)

15. Roger E Knox (1 out of 1 patent)

17 patents: Sort by Forward Citations

1. 10971964 - Stator for a multiphase electric motor and method of making (2021-04-06),

2. 10903717 - Repaired rotor of a multi-phase electric motor and method of repair (2021-01-26),

3. 10081250 - Cooling fan vane assembly for a resistor grid (2018-09-25),

4. 9815374 - Braking grid cooling system (2017-11-14),

5. 9450530 - Control for multi-phase induction motor (2016-09-20),

6. 8638059 - Control for multi-phase induction motor (2014-01-28),

7. 8587165 - Cooled fan motor and method of operation (2013-11-19),

8. 8575796 - Heavy duty stator core and coil assembly (2013-11-05),

9. 8264116 - Motor/generator phase insulation article and method for manufacturing (2012-09-11),

10. 7963356 - Locomotive-radiator-cooling-fan tankhead assembly (2011-06-21),

11. 7893589 - AC-induction-motor rotor lamination having rotor slots (2011-02-22),

12. 6769600 - Motor lamination notching apparatus and method with selectively positionable punches (2004-08-03),

13. 6109532 - Locomotive cab heating system (2000-08-29),

14. 6095871 - Receptacle assembly for electric power leads (2000-08-01),

15. 5845553 - Stator lamination jig system (1998-12-08),

Company Overview

Dayton-Phoenix Group, Inc. is a specialized engineering and manufacturing firm based in Dayton, Ohio. The company focuses on providing advanced solutions in the fields of aerospace, defense, and industrial applications. With a commitment to innovation, Dayton-Phoenix develops a range of products and technologies that enhance operational efficiency and safety in critical environments. Their expertise spans various domains, including precision machining, custom fabrication, and system integration, catering to both domestic and international markets.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

17 Patents

#39 in Dayton, OH

#806 in Ohio

#18,881 in US

#35,887 in the World

Dayton, OH, United States of America

Dayton-Phoenix Group, Inc.

Forward Citations = 59

18 inventors:

Joseph A Zahora (10 out of 10 patents)

Johnny D Yu (4 out of 4 patents)

John W Murphy (4 out of 6 patents)

4. Gale A Kooken (3 out of 3 patents)

5. Roger D Fleming (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Dayton-Phoenix Group, Inc.. Retrieved from https://idiyas.com/company/dayton-phoenix-group

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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