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Sharon Center, OH, United States of America

Power Transmission Technology, Inc.

USPTO Granted Patents = 19

Trademarks = 1

Forward Citations = 198

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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 specialized manufacturer based in Sharon Center, Ohio, focusing on high-performance power transmission solutions. The company develops a range of products including gears, couplings, and other mechanical components designed to enhance efficiency and reliability in various industrial applications. With a commitment to innovation, Power Transmission Technology serves diverse sectors, providing tailored solutions that meet the evolving needs of its clients in the global market.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Oct 6 2026

19 Patents

#2 in Sharon Center, OH

#738 in Ohio

#17,123 in US

#32,623 in the World

Sharon Center, OH, United States of America

Power Transmission Technology, Inc.

Forward Citations = 198

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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