For the Inventor, By the Inventor

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Windsor, CT, United States of America

Stanadyne Corporation

USPTO Granted Patents = 181

% Expired Patents = 8.3

EPO Patents = 22

Trademarks = 22

Forward Citations = 2,258

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99 inventors (with patents filed for the assignee):

Ilija Djordjevic (24 out of 44 patents)

Leon P Janik (17 out of 52 patents)

Alfred M Moen (15 out of 16 patents)

4. Robert G Lucas (13 out of 13 patents)

5. Mitchell L Wilgus (12 out of 29 patents)

6. Charles W Davis (12 out of 12 patents)

7. Roger H Ramsey (12 out of 13 patents)

8. Michael J Williams (11 out of 20 patents)

9. Daniel E Salzgeber (10 out of 11 patents)

10. Mark S Cavanagh (6 out of 6 patents)

11. Robert Raufeisen (6 out of 7 patents)

12. Richard Paulo Pellini (5 out of 5 patents)

13. David H Hodgkins (5 out of 5 patents)

14. Yevgeniy Norkin (4 out of 4 patents)

15. Stephen J Vardion (4 out of 4 patents)

Core Competencies:

Fuel Injector

High Pressure Pump

Control Valve

Direct Injection

Common Rail

Cavitation Suppression

Modular Filter

Piston Pump

EGR Valve

Hydraulic Flow Control

Integrated Injection

Pressure Relief

181 patents: Sort by Forward Citations

1. 11808232 - High pressure port fuel injection system (2023-11-07),

2. 11655786 - Fuel injector (2023-05-23),

3. 11603945 - Actuator and compact EGR valve (2023-03-14),

4. 11459988 - High pressure fuel pump with mechanical pressure regulation (2022-10-04),

5. 11098710 - Inlet control valve for high pressure fuel pump (2021-08-24),

6. 10975816 - Roller drive mechanism for GDI pump (2021-04-13),

7. 10539104 - Three stage proportional control valve (2020-01-21),

8. 10450992 - GDI pump with direct injection and port injection (2019-10-22),

9. 10331145 - Positive sealing proportional control valve with sealable vent valve (2019-06-25),

10. 10330065 - Direct magnetically controlled inlet valve for fuel pump (2019-06-25),

11. 10294906 - Electronically controlled inlet metered single piston fuel pump (2019-05-21),

12. 10273920 - Single piston pump with reduced piston side loads (2019-04-30),

13. 10107247 - Method of suppressing cavitation in a fuel injector (2018-10-23),

14. 9759174 - Constant pressure self-regulating common rail single piston pump (2017-09-12),

15. 9644589 - Debris diverter shield for fuel injector (2017-05-09),

Company Overview

Stanadyne Corporation, headquartered in Windsor, Connecticut, specializes in advanced fuel injection systems for various applications, including automotive and industrial engines. The company focuses on developing innovative technologies such as fuel injectors, high-pressure pumps, and control valves, with an emphasis on enhancing performance and efficiency in direct injection and common rail systems. Stanadyne is recognized for its expertise in cavitation suppression and modular filter design, contributing to the evolution of fuel delivery solutions in the market.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

181 Patents

#2 in Windsor, CT

#63 in Connecticut

#2,239 in US

#4,611 in the World

Windsor, CT, United States of America

Stanadyne Corporation

Forward Citations = 2,258

99 inventors:

Ilija Djordjevic (24 out of 44 patents)

Leon P Janik (17 out of 52 patents)

Alfred M Moen (15 out of 16 patents)

4. Robert G Lucas (13 out of 13 patents)

5. Mitchell L Wilgus (12 out of 29 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Stanadyne Corporation. Retrieved from https://idiyas.com/company/stanadyne

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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