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Lincoln, United Kingdom

Clayton Dewandre Co., Ltd.

Calculating rank

USPTO Granted Patents = 25

Forward Citations = 131

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16 inventors (with patents filed for the assignee):

Michael J Hawker (7 out of 7 patents)

Wilbur Mills Page (5 out of 5 patents)

Ralph Coupland (5 out of 5 patents)

4. Henry J Levington (4 out of 5 patents)

5. Phillip Applewhite (2 out of 2 patents)

6. James G Knowles (2 out of 2 patents)

7. Michael G McCullagh (1 out of 1 patent)

8. Michael R Hudston (1 out of 1 patent)

9. Eric William Richmond (1 out of 1 patent)

10. John K Anderson (1 out of 1 patent)

11. Peter Lewyckyj (1 out of 1 patent)

12. Joseph Mair (1 out of 1 patent)

13. John S Thistleton (1 out of 1 patent)

14. Peter J Goodwin (1 out of 1 patent)

15. Colm M Keegan (1 out of 1 patent)

Core Competencies:

Pilot-Operated Modulator

Hydraulic Pump

Solenoid Valve

Master Cylinder

Clutch Booster

Reciprocating Exhauster

Brake Valve

Load-Sensing

Cab Tilting

Spring Brakes

Dual Circuit

Slack Adjusters

25 patents: Sort by Forward Citations

1. 5007455 - Pilot-operated hydraulic antilock modulator (1991-04-16),

2. 4911615 - Hydraulic pump unloader (1990-03-27),

3. 4875742 - Solenoid operated hydraulic control valve (1989-10-24),

4. 4866938 - Master cylinder piston with floating sealing ring recuperation valve (1989-09-19),

5. 4821518 - Clutch booster with overcenter means (1989-04-18),

6. 4525128 - Reciprocating exhauster (1985-06-25),

7. 4486053 - Solenoid operated valves (1984-12-04),

8. 4343517 - Hydraulic braking systems for tractor-trailer combinations (1982-08-10),

9. 4285364 - Hose coupling (1981-08-25),

10. 4275643 - Hydraulic control systems (1981-06-30),

11. 4260197 - Spool type brake valves (1981-04-07),

12. 4239293 - Vehicle braking system with valving to control spring applied brakes and (1980-12-16),

13. 4236762 - Full power hydraulic braking systems for tractor-trailer combinations (1980-12-02),

14. 4236761 - Dual circuit braking system employing single load sensing valve in one (1980-12-02),

15. 4174016 - Hydraulic cab tilting systems (1979-11-13),

Company Overview

Clayton Dewandre Co., Ltd. is a prominent manufacturer specializing in advanced hydraulic and pneumatic systems, primarily serving the automotive and industrial sectors. The company is known for its innovative solutions that enhance vehicle performance and operational efficiency. With a strong emphasis on research and development, Clayton Dewandre focuses on creating cutting-edge technologies that meet the evolving needs of its clients. Based in Lincoln, GB, the company plays a significant role in the engineering landscape, contributing to advancements in fluid power systems.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 3 2026

25 Patents

#1 in Lincoln

#705 in United Kingdom

#25,764 in the World

Lincoln, United Kingdom

Clayton Dewandre Co., Ltd.

Forward Citations = 131

16 inventors:

Michael J Hawker (7 out of 7 patents)

Wilbur Mills Page (5 out of 5 patents)

Ralph Coupland (5 out of 5 patents)

4. Henry J Levington (4 out of 5 patents)

5. Phillip Applewhite (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Clayton Dewandre Co., Ltd.. Retrieved from https://idiyas.com/company/clayton-dewandre-company

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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