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Sharon Center, OH, United States of America

Power Transmission Technology, Inc.

USPTO Granted Patents = 19

Trademarks = 2

Forward Citations = 192

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7 inventors (with patents filed for the assignee):

David C Heidenreich (18 out of 30 patents)

Keith A Nichols (5 out of 6 patents)

Robert E Herchick (3 out of 5 patents)

4. Thomas L Richards (2 out of 2 patents)

5. Joseph W Guinter (1 out of 2 patents)

6. Michael O Culbertson (1 out of 1 patent)

7. Marcus H Collins (1 out of 14 patents)

19 patents: Sort by Forward Citations

1. 6874610 - Compact dry power takeoff unit (2005-04-05),

2. 6874606 - Torque limiting clutch having centrifugally regulated characteristic torque (2005-04-05),

3. 6557687 - Clutch assembly and diagnostic system (2003-05-06),

4. 6305515 - Hydraulically actuated power takeoff clutch assembly (2001-10-23),

5. 6206149 - Caliper disk brake for steel mill cranes (2001-03-27),

6. 6190258 - Torque limiter clutch (2001-02-20),

7. 6186287 - Caliper disk brake for steel mill cranes (2001-02-13),

8. 6109659 - Hydrostatic rotary union (2000-08-29),

9. 6019199 - Hydraulic caliper disk brake for steel mill cranes (2000-02-01),

10. 5957248 - Caliper disk brake for steel mill cranes (1999-09-28),

11. 5688176 - Multiple disk torque limiter for hollow shaft motors (1997-11-18),

12. 5582277 - Caliper disk brake for steel mill cranes (1996-12-10),

13. 5295909 - Compact torque limiting clutch (1994-03-22),

14. 5228543 - Sealed wet disc brake for vehicles (1993-07-20),

15. 5215174 - Over-running clutch (1993-06-01),

Power Transmission Technology, Inc. is a leading provider of high-quality power transmission products and services. With years of experience in the industry, we specialize in offering innovative solutions for various applications, including industrial, automotive, and aerospace. Our product range includes gears, bearings, couplings, and more, all designed to meet the diverse needs of our customers. Visit our website to learn more about our offerings and how we can help improve your business's efficiency and performance.

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

Company Badge

USPTO Data Jan 1 1976 - Jan 20 2026

19 Patents

#2 in Sharon Center, OH

#702 in Ohio

#16,657 in US

#31,779 in the World

Sharon Center, OH, United States of America

Power Transmission Technology, Inc.

Forward Citations = 192

7 inventors:

David C Heidenreich (18 out of 30 patents)

Keith A Nichols (5 out of 6 patents)

Robert E Herchick (3 out of 5 patents)

4. Thomas L Richards (2 out of 2 patents)

5. Joseph W Guinter (1 out of 2 patents)

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