For the Inventor, By the Inventor

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Windsor, CT, United States of America

Stanadyne Automotive Corp.

Calculating rank

USPTO Granted Patents = 76

Trademarks = 7

Forward Citations = 1,714

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30 inventors (with patents filed for the assignee):

Leon P Janik (35 out of 52 patents)

Ilija Djordjevic (16 out of 44 patents)

M Craig Maxwell (11 out of 11 patents)

4. Michael J Williams (9 out of 20 patents)

5. William W Kelly (8 out of 12 patents)

6. David H Hodgkins (8 out of 8 patents)

7. Kenneth H Klopfer (7 out of 11 patents)

8. Robert William Zeiner (3 out of 6 patents)

9. Larry R Cote (2 out of 2 patents)

10. David A Chace (2 out of 3 patents)

11. Robert R Winkler (2 out of 2 patents)

12. Richard E Atwood (2 out of 2 patents)

13. Felix Libfeld (1 out of 2 patents)

14. Michael J O'Brien (1 out of 22 patents)

15. Richard E Vanderpoel (1 out of 22 patents)

Core Competencies:

Gasoline Direct Injection

Common Rail Injector

Fuel Filter

Supply Pump

Pressure Relief Valve

Servo Controlled Injector

Filter Cartridge

Fuel Injection Pump

Piston Cooling Nozzle

Calibration System

Fuel Circuit

Hydraulic Pressure Pump

76 patents: Sort by Forward Citations

1. 6494182 - Self-regulating gasoline direct injection system (2002-12-17),

2. 6358024 - High capacity supply pump with simultaneous directly actuated plungers (2002-03-19),

3. 6345609 - Supply pump for gasoline common rail (2002-02-12),

4. 6261069 - Shaft seal with pressure equalizing shuttle (2001-07-17),

5. 6227806 - Lift pump guard (2001-05-08),

6. 6187188 - Filter cartridge retention system (2001-02-13),

7. 6183212 - Snap-in connection for pumping plunger sliding shoes (2001-02-06),

8. D435631 - Filter cartridge (2000-12-26),

9. 6125822 - Two stage pressure relief valve (2000-10-03),

10. 6116217 - Full authority rail pressure-reduction valve (2000-09-12),

11. 6113361 - Intensified high-pressure common-rail supply pump (2000-09-05),

12. 6062498 - Fuel injector with at least one movable needle-guide (2000-05-16),

13. 6048455 - Filter assembly with conformal cartridge support structure (2000-04-11),

14. 6027312 - Hydraulic pressure supply pump with simultaneous directly actuated (2000-02-22),

15. 6024298 - Servo controlled common rail injector (2000-02-15),

Company Overview

Stanadyne Automotive Corp. is a prominent player in the automotive sector, specializing in the development and manufacturing of advanced fuel injection systems. Based in Windsor, Connecticut, the company focuses on innovative technologies such as gasoline direct injection and common rail injectors, enhancing engine performance and efficiency. Their product portfolio includes fuel filters, supply pumps, pressure relief valves, and servo-controlled injectors, catering to the evolving needs of the automotive industry and contributing to cleaner, more efficient fuel management solutions.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

76 Patents

#3 in Windsor, CT

#131 in Connecticut

#4,846 in US

#9,898 in the World

Windsor, CT, United States of America

Stanadyne Automotive Corp.

Forward Citations = 1,714

30 inventors:

Leon P Janik (35 out of 52 patents)

Ilija Djordjevic (16 out of 44 patents)

M Craig Maxwell (11 out of 11 patents)

4. Michael J Williams (9 out of 20 patents)

5. William W Kelly (8 out of 12 patents)

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

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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