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For the Inventor, By the Inventor

Concord, Canada

Tesma International, Inc.


USPTO Granted Patents = 46

% Expired Patents = 32.6


Forward Citations = 432

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44 inventors (with patents filed for the assignee):

goldMedal David Mark Pascoe (9 out of 12 patents)

silverMedal Zdenek Cerny (8 out of 9 patents)

bronzeMedal Helge Himmeroeder (5 out of 5 patents)

4.  Michael Gericke (4 out of 4 patents)

5.  Herbert Gruber (3 out of 16 patents)

6.  Alex Colas (3 out of 3 patents)

7.  Ronald G Stark (3 out of 4 patents)

8.  Richard Muizelaar (2 out of 18 patents)

9.  Radisav Jocic (2 out of 3 patents)

10.  Cheng Mu (2 out of 4 patents)

11.  Jianwen Li (2 out of 2 patents)

12.  Peter J Vert (2 out of 2 patents)

13.  Norman Cerny (2 out of 2 patents)

14.  Konrad Scharrer (2 out of 3 patents)

15.  Saverio Bozzo (2 out of 2 patents)


Core Competencies:
Vane Pump
Oil Pump
Differential Housing
Variable Flow Pump
Proportional Valve
Electromagnetic Clutch
Gasket Installation
Clutch Assembly
Coolant Container
Fuel Cap Assembly
Torsional Vibration Damper
Die Casting

46 patents:

1. 7798790 - Vane pump using line pressure to directly regulate displacement (2010-09-21),
2. 7364018 - Oil pump drive assembly (2008-04-29),
3. 7207110 - Differential housing with integrated ring gear (2007-04-24),
4. 7186071 - Variable flow water pump (2007-03-06),
5. 7037088 - Dual balance shaft pump assembly (2006-05-02),
6. 6959576 - Cold forming of splined transmission hubs (2005-11-01),
7. 6939260 - Silent drive chain assembly having flexible links (2005-09-06),
8. 6938586 - Proportional valve (2005-09-06),
9. 6935839 - Variable flow water pump (2005-08-30),
10. 6915958 - Linear proportional valve (2005-07-12),
11. 6863221 - Linear proportional valve (2005-03-08),
12. 6848161 - Gasket installation apparatus (2005-02-01),
13. 6814198 - Multi-directional coupling (2004-11-09),
14. 6769525 - Clutch assembly having a multi-piece clutch ring (2004-08-03),
15. 6745995 - Electromagnetically controlled butterfly thermostat valve (2004-06-08),
Company Overview
Tesma International, Inc., based in Concord, CA, specializes in the development and manufacturing of advanced fluid management systems and components. The company focuses on technologies such as vane pumps, oil pump drive assemblies, and variable flow water pumps, catering to various industrial applications. Additionally, Tesma is known for its expertise in proportional valves, electromagnetic clutches, and torque transmitting members, employing innovative cold forming techniques to enhance product performance and reliability.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

Tesma International, Inc. USPTO Patent Assignee Logo
46 Patents

#5 in Concord

#303 in Canada

#15,110 in the World

Concord, CA
Concord, Canada

Tesma International, Inc.

Forward Citations = 432

44 inventors:

goldMedal David Mark Pascoe (9 out of 12 patents)

silverMedal Zdenek Cerny (8 out of 9 patents)

bronzeMedal Helge Himmeroeder (5 out of 5 patents)

4.  Michael Gericke (4 out of 4 patents)

5.  Herbert Gruber (3 out of 16 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tesma International, Inc.. Retrieved from https://idiyas.com/company/tesma-international

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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