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For the Inventor, By the Inventor

Canton, OH, United States of America

The Timken Company


USPTO Granted Patents = 318

% Expired Patents = 15.7



Trademarks = 32

Forward Citations = 4,144

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291 inventors (with patents filed for the assignee):

goldMedal Xiaolan Ai (40 out of 41 patents)

silverMedal Gerald P Fox (26 out of 26 patents)

bronzeMedal Dennis L Otto (21 out of 25 patents)

4.  Mircea Gradu (18 out of 21 patents)

5.  Mark A Joki (14 out of 19 patents)

6.  William E Harbottle (12 out of 13 patents)

7.  Gary L Doll (11 out of 27 patents)

8.  Alfred John Santos (10 out of 14 patents)

9.  Mark E LaCroix (10 out of 16 patents)

10.  Lei Wang (10 out of 10 patents)

11.  Ryan D Evans (10 out of 10 patents)

12.  John D Dougherty (9 out of 9 patents)

13.  Thomas J Rybkoski (9 out of 9 patents)

14.  Douglas H Smith (7 out of 7 patents)

15.  Jan De Swardt (7 out of 11 patents)


Core Competencies:
Tapered Roller Bearings
Bearing Cage
Insulation Systems
Position Sensors
Magnetic Arrays
Mechanical Strength
Lubricant Additives
Epicyclic Gear Systems
High Speed Bearings
Non-Contact Seals
Winding Insulation
Load Sharing Mechanisms

318 patents:

1. 12747757 - Bearing component with piezoelectric core (2026-09-29),
2. 12698821 - Tensioning apparatus (2026-08-04),
3. 12398757 - Skew limiting bearing cage (2025-08-26),
4. 12313430 - Position sensor system using equidistantly spaced magnetic sensor arrays (2025-05-27),
5. 12294254 - Mechanical strength of connection of wound rotor generator/motor (2025-05-06),
6. 12278531 - Vacuum pressure impregnation method for insulation system (2025-04-14),
7. 12206298 - Eliminating wind generator inter-turn failures winding improvement (2025-01-21),
8. 12066059 - Roller seating device for tapered roller bearings (2024-08-20),
9. 11962205 - Mechanical strength of connection of wound rotor generator/motor (2024-04-16),
10. 11916448 - Small-fraction nanoparticle resin for electric machine insulation systems (2024-02-27),
11. 11804748 - Corona protection insulation system (2023-10-31),
12. 11767880 - Roller sequencing for improved bearing runout (2023-09-26),
13. 11708855 - Two-piece composite tapered roller bearing outer ring with interference fit (2023-07-25),
14. 11624402 - Non-elliptical contact profile for roller bearing (2023-04-11),
15. 11605994 - Winding insulation system (2023-03-14),
The Timken Company, headquartered in Canton, Ohio, specializes in the development and manufacture of engineered bearings and mechanical power transmission products. With a strong focus on bearing technology, the company excels in areas such as tapered roller bearings, bearing cages, and insulation systems. Timken also invests in advanced technologies including position sensors, magnetic arrays, and lubricant additives, enhancing mechanical strength and performance. Their innovations serve diverse industries, ensuring reliability and efficiency in various applications.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

The Timken Company
318 Patents

#1 in Canton, OH

#63 in Ohio

#1,386 in US

#2,823 in the World

Canton, OH (US)
Canton, OH, United States of America

The Timken Company

Forward Citations = 4,144

291 inventors:

goldMedal Xiaolan Ai (40 out of 41 patents)

silverMedal Gerald P Fox (26 out of 26 patents)

bronzeMedal Dennis L Otto (21 out of 25 patents)

4.  Mircea Gradu (18 out of 21 patents)

5.  Mark A Joki (14 out of 19 patents)

Please report any incorrect information to [email protected]
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