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For the Inventor, By the Inventor

Mississauga, Canada

John T. Hepburn, Limited

Calculating rank
USPTO Granted Patents = 14

Forward Citations = 238

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8 inventors (with patents filed for the assignee):

goldMedal Ronald Ballantyne (7 out of 7 patents)

silverMedal Leon Malashenko (5 out of 5 patents)

bronzeMedal Derek Foster (2 out of 2 patents)

4.  Martin Murray (1 out of 3 patents)

5.  Andrew Ferguson (1 out of 1 patent)

6.  Margus Tae (1 out of 1 patent)

7.  Colin Rich (1 out of 1 patent)

8.  James Hepburn (1 out of 1 patent)


14 patents:

1. 5237916 - Regenerative hydraulic cylinders with internal flow paths (1993-08-24),
2. 5156782 - Maintaining press platens in parallel relationship (1992-10-20),
3. 5088400 - Adjusting press platen clearance (1992-02-18),
4. 4862821 - Mechanism for tensioning a moving chain (1989-09-05),
5. 4841898 - Anchoring system for floating structure (1989-06-27),
6. 4836125 - Anchoring system for floating structure (1989-06-06),
7. 4828474 - Hydraulic cylinder device for platen spacing indication and control (1989-05-09),
8. 4819555 - Press with adjustable platen spacing (1989-04-11),
9. 4759280 - Hydraulic press with adjustable platen clearance (1988-07-26),
10. 4722293 - Integrated winch and windlass (1988-02-02),
11. 4694744 - Hydraulic press without conventional side slabs and cross-head (1987-09-22),
12. 4690049 - Hydraulic press with side slab guided upper platen (1987-09-01),
13. 4476801 - Mooring device (1984-10-16),
14. 3980252 - Wire rope spooling mechanism (1976-09-14),
Company Overview
John T. Hepburn, Limited is a prominent manufacturer specializing in high-quality industrial products and solutions. Based in Mississauga, Canada, the company focuses on delivering innovative technologies that enhance operational efficiency across various sectors. With a strong emphasis on research and development, John T. Hepburn, Limited is dedicated to advancing its capabilities in engineering and manufacturing, ensuring that it meets the evolving needs of its clients in a competitive marketplace.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Nov 3 2026

14 Patents

#57 in Mississauga

#1,070 in Canada

#42,293 in the World

Mississauga, CA
Mississauga, Canada

John T. Hepburn, Limited

Forward Citations = 238

8 inventors:

goldMedal Ronald Ballantyne (7 out of 7 patents)

silverMedal Leon Malashenko (5 out of 5 patents)

bronzeMedal Derek Foster (2 out of 2 patents)

4.  Martin Murray (1 out of 3 patents)

5.  Andrew Ferguson (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: John T. Hepburn, Limited. Retrieved from https://idiyas.com/company/john-t-hepburn

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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