Denis R May

This inventor holds 11 USPTO granted patents. Top assignees: J. E. Hanger and Company Limited, J. D. Hanger & Company Limited, Ortho Europe Ltd.. Active years: 1976-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Denis R May. Retrieved from https://idiyas.com/inventor/denis-r-may

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

USPTO Granted Patents = 11

% Patents Active = 100.0

Average Co-Inventor Count = 1.2

ph-index = 8

Forward Citations = 353(Granted Patents)

Location History:

London, EN (1976)
London, GB (1979 - 1985)
Esher, GB (1985 - 1999)

Company Filing History:

9 out of 15

J. E. Hanger and Company Limited

patents

1 out of 1

J. D. Hanger & Company Limited

Years Active: 1976-1999

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11 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6007582 - Prosthetic foot with means for energy storage and release (1999-12-28),

2. 4911709 - Artificial knee with improved stable link-type knee joint (1990-03-27),

3. 4650492 - Artificial hands (1987-03-17),

4. 4523338 - Demountable joint (1985-06-18),

5. 4517688 - Artificial leg for occasional use (1985-05-21),

6. 4458367 - Knee joint for artificial limbs (1984-07-10),

7. 4302856 - Artificial limbs (1981-12-01),

8. 4178642 - Knee joint structure for artificial legs (1979-12-18),

9. 4156945 - Prosthetic wrist fitting (1979-06-05),

10. 4145766 - Adjustable friction joint for an artificial knee (1979-03-27),

11. 3982278 - Alignment device for artificial limbs (1976-09-28),

Title: The Innovative Contributions of Denis R May

Introduction

Denis R May is a notable inventor based in London, GB, recognized for his significant contributions to the field of prosthetics. With a total of 11 patents to his name, he has made remarkable advancements that enhance the quality of life for individuals requiring prosthetic limbs.

Latest Patents

Among his latest innovations are two groundbreaking patents. The first is a "Prosthetic foot with means for energy storage and release," which features a movable heel mechanism that works in conjunction with an energy-storing device. This design allows for the storage and release of energy, providing a lift-off force during push-off. The second patent is for an "Artificial knee with improved stable link-type knee joint." This improved knee prosthesis utilizes modified geometry to increase the degree of flexion to 143 degrees, incorporating a resilient leaf spring for extension bias and an enhanced locking mechanism.

Career Highlights

Denis has worked with reputable companies in the prosthetics industry, including J. E. Hanger and Company Limited and Ortho Europe Ltd. His experience in these organizations has contributed to his expertise and innovative approach in developing advanced prosthetic solutions.

Collaborations

Throughout his career, Denis has collaborated with talented individuals such as Richard Z Marlow and Mohammad Barkhordar. These partnerships have fostered a creative environment that has led to the development of his innovative patents.

Conclusion

Denis R May's contributions to prosthetic technology exemplify the impact of innovation in improving human mobility. His patents reflect a commitment to enhancing the functionality and comfort of prosthetic devices, making a significant difference in the lives of many.

Profile summary based on public USPTO records.

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]