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For the Inventor, By the Inventor

Mississauga, Canada

Stackpole Limited


USPTO Granted Patents = 35

% Expired Patents = 2.9


Trademarks = 1

Forward Citations = 406

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29 inventors (with patents filed for the assignee):

goldMedal Peter Jones (16 out of 18 patents)

silverMedal Rohith Shivanath (10 out of 16 patents)

bronzeMedal Gerd Hinzmann (6 out of 7 patents)

4.  Roger Lawcock (5 out of 7 patents)

5.  Keith Buckley-Golder (5 out of 5 patents)

6.  Robert Round (4 out of 4 patents)

7.  Frank Ma (4 out of 4 patents)

8.  Mark Haiko (4 out of 4 patents)

9.  Karol Kucharski (3 out of 3 patents)

10.  Allan Wilson (3 out of 3 patents)

11.  Danny Thien Thieu (3 out of 3 patents)

12.  Eric R Cozens (3 out of 3 patents)

13.  Edward J Zelt (2 out of 4 patents)

14.  George W King (2 out of 3 patents)

15.  Robert H Mooy (1 out of 1 patent)


Core Competencies:
Vane Pump
One-Way Clutch
Twin-Helical Gears
High Density Forming
Sintered Alloy
Powder Metal
Phased Split Die
Self-Sintered Composite
Permanent Magnet Motor
Radio-Frequency Interference
Labelling Machine
Densification

35 patents:

1. 7955063 - Vane pump (2011-06-07),
2. 6907971 - One-way clutch (2005-06-21),
3. 6440357 - Compacted-powder opposed twin-helical gears and method (2002-08-27),
4. 6365094 - Lubricated die (2002-04-02),
5. 6346213 - Press and sinter process for high density components (2002-02-12),
6. 6318986 - Undercut split die (2001-11-20),
7. 6193927 - High density forming process with ferro alloy and prealloy (2001-02-27),
8. 6165400 - Compacted-powder opposed twin-helical gears and method (2000-12-26),
9. 6143240 - High density forming process with powder blends (2000-11-07),
10. 6120728 - Method of making a component using a phased split die (2000-09-19),
11. 6110419 - Point contact densification (2000-08-29),
12. 6099772 - Undercut split die (2000-08-08),
13. 6019937 - Press and sinter process for high density components (2000-02-01),
14. 5997805 - High carbon, high density forming (1999-12-07),
15. 5881354 - Sintered hi-density process with forming (1999-03-09),
Company Overview
Stackpole Limited is a leading manufacturer specializing in the design and production of resistive components, including resistors, thermistors, and other related products. The company focuses on delivering high-quality solutions for various industries, including automotive, telecommunications, and industrial applications. With a commitment to innovation, Stackpole leverages advanced technologies to enhance product performance and reliability, serving a global customer base from its headquarters in Mississauga, Canada.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

Stackpole Limited USPTO Patent Assignee Logo
35 Patents

#28 in Mississauga

#382 in Canada

#19,148 in the World

Mississauga, CA
Mississauga, Canada

Stackpole Limited

Forward Citations = 406

29 inventors:

goldMedal Peter Jones (16 out of 18 patents)

silverMedal Rohith Shivanath (10 out of 16 patents)

bronzeMedal Gerd Hinzmann (6 out of 7 patents)

4.  Roger Lawcock (5 out of 7 patents)

5.  Keith Buckley-Golder (5 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Stackpole Limited. Retrieved from https://idiyas.com/company/stackpole

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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