For the Inventor, By the Inventor

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Cleveland, OH, United States of America

Parker-hannifin Corporation

USPTO Granted Patents = 1,663

CIPO Patents = 43

EPO Patents = 380

Trademarks = 229

Forward Citations = 19,859

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1,748 inventors (with patents filed for the assignee):

Michael H Bunyan (26 out of 30 patents)

Bernard C Sharp (26 out of 27 patents)

Jason Scot Richardson (25 out of 26 patents)

4. Hao Zhang (25 out of 26 patents)

5. Xingen Dong (25 out of 28 patents)

6. Walter H Stone (25 out of 28 patents)

7. Michael D Clausen (18 out of 25 patents)

8. Jerry G Jelinek (18 out of 18 patents)

9. Brian B Slattery (18 out of 18 patents)

10. Richard L Kenyon (16 out of 16 patents)

11. Steven R Knight (15 out of 25 patents)

12. Adel B Mansour (15 out of 18 patents)

13. Kenneth W Cornett (14 out of 15 patents)

14. John Loeffler (14 out of 14 patents)

15. Robert R Pelletier (14 out of 14 patents)

Core Competencies:

Thermostatic Expansion Valve

Hydraulic Pump

Electric Motor

Fluid Coupling

Eddy Current Damper

Air Conditioning System

Fracking Plug

Sensor Assembly

Variable Displacement Pump

Fuel Water Separation

Control Actuator

Thermoplastic Vulcanizates

1,663 patents: Sort by Forward Citations

1. 12510156 - Fitting for through-wall penetration of a composite vessel (2025-12-30),

2. 12504734 - Systems and methods for a resolver and motor control with enhanced speed and direction monitoring (2025-12-23),

3. 12496037 - Medical apparatus with enhanced ultrasound visibility (2025-12-16),

4. 12487014 - Bulbless thermostatic expansion valve containing a thermal separation slot (2025-12-02),

5. 12480600 - Refrigerant control valve with an enhanced flow modulating plug configuration (2025-11-25),

6. 12473914 - Systems and assemblies for an electric motor with integrated hydraulic pump and electronic drive device (2025-11-18),

7. 12467455 - Hydraulic gear pump with hydrostatic shaft bearing and isolated case drain and method of operating a hydraulic gear pump (2025-11-11),

8. 12460844 - Ball seal for thermal sensor assembly of thermostatic expansion valve (2025-11-04),

9. 12455032 - Blind mate fluid coupling with misalignment compensation (2025-10-28),

10. 12449249 - Sensor assembly for a steering control lever of a mower (2025-10-21),

11. 12448955 - Displacement control for hydraulic pump (2025-10-21),

12. 12442597 - Heat exchanger with progressive divided flow circuit, structural load bearing design (2025-10-14),

13. 12442396 - Valve with an adjustable flow sharing pressure compensator (2025-10-14),

14. 12421825 - Fracking plug with a support ring (2025-09-23),

15. D1092587 - Rotary actuator (2025-09-09),

Parker-Hannifin Corporation is a global leader in motion and control technologies. The company specializes in providing precision-engineered solutions for a wide range of industries, including aerospace, industrial, and mobile. With a diverse portfolio of products and systems, Parker-Hannifin helps its customers improve their productivity and profitability. Visit their website to learn more about their innovative solutions and expertise.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

1,663 Patents

#3 in Cleveland, OH

#10 in Ohio

#296 in US

#587 in the World

Cleveland, OH, United States of America

Parker-hannifin Corporation

Forward Citations = 19,859

1,748 inventors:

Michael H Bunyan (26 out of 30 patents)

Bernard C Sharp (26 out of 27 patents)

Jason Scot Richardson (25 out of 26 patents)

4. Hao Zhang (25 out of 26 patents)

5. Xingen Dong (25 out of 28 patents)

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