For the Inventor, By the Inventor

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Rochester, NY, United States of America

Zexel Torsen Inc.

USPTO Granted Patents = 15

Forward Citations = 115

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13 inventors (with patents filed for the assignee):

Ward E Bowerman (5 out of 5 patents)

Kenneth A May (4 out of 7 patents)

Thomas B Ryan (2 out of 6 patents)

4. Charles T D'Agostino (2 out of 2 patents)

5. James S Dye (1 out of 7 patents)

6. Shiro Ichiki (1 out of 3 patents)

7. Steven E Ostertag (1 out of 4 patents)

8. Joseph E Cilano (1 out of 5 patents)

9. Robert K Holzwarth (1 out of 2 patents)

10. Paolo Sacchettini (1 out of 1 patent)

11. Mark W Damick (1 out of 1 patent)

12. Patrick J Yehl (1 out of 1 patent)

13. Noel R Barnes, Ii (1 out of 1 patent)

15 patents: Sort by Forward Citations

1. 6083133 - Bevel gear differential with asymmetrically distributed pinions (2000-07-04),

2. 5957801 - Coil spring preload for parallel-axis differential (1999-09-28),

3. 5733216 - Thrust-block for C-clip differential (1998-03-31),

4. 5671144 - Combined power limiting and power distributing traction control system (1997-09-23),

5. 5657829 - Hybrid control system for limiting engine output (1997-08-19),

6. 5655987 - Roll-formed differential gear (1997-08-12),

7. 5647815 - Differential with bias control (1997-07-15),

8. 5624344 - Lubrication system for a parallel-axis differential (1997-04-29),

9. 5554081 - Differential with distributed planet gears (1996-09-10),

10. 5533944 - Differential with outwardly directed planetary gear separating forces (1996-07-09),

11. 5524080 - Traction control with variable threshold (1996-06-04),

12. 5515708 - Roll-forming die for helical gears (1996-05-14),

13. 5495225 - Method of alerting a vehicle driver to different types of traction losses (1996-02-27),

14. 5492510 - Differential with extended planet gears having multiple meshing portions (1996-02-20),

15. 5433673 - Differential with pivotable gear mountings (1995-07-18),

Zexel Torsen Inc. is a leading manufacturer of high-performance automotive drivetrain solutions. Specializing in Torsen-type limited-slip differentials, our products are trusted by top automotive manufacturers and enthusiasts worldwide for their unparalleled performance and reliability. From racing to off-roading, our Torsen differentials deliver superior traction and control in any driving conditions.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

15 Patents

#49 in Rochester, NY

#1,131 in New York

#20,409 in US

#38,696 in the World

Rochester, NY, United States of America

Zexel Torsen Inc.

Forward Citations = 115

13 inventors:

Ward E Bowerman (5 out of 5 patents)

Kenneth A May (4 out of 7 patents)

Thomas B Ryan (2 out of 6 patents)

4. Charles T D'Agostino (2 out of 2 patents)

5. James S Dye (1 out of 7 patents)

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