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For the Inventor, By the Inventor

Plymouth, MI, United States of America

Freudenberg-nok General Partnership


USPTO Granted Patents = 225



Trademarks = 24

Forward Citations = 1,719

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161 inventors (with patents filed for the assignee):

goldMedal Edward Hosung Park (26 out of 26 patents)

silverMedal Alexander Berdichevsky (22 out of 22 patents)

bronzeMedal John C Dahlheimer (15 out of 16 patents)

4.  David Sakata (11 out of 11 patents)

5.  Francis Joseph Walker (11 out of 12 patents)

6.  John A London (9 out of 9 patents)

7.  Paul J Hochgesang (8 out of 8 patents)

8.  John B Wagner (8 out of 9 patents)

9.  Raymond Lee Szparagowski (7 out of 7 patents)

10.  Mickey L Love (6 out of 10 patents)

11.  Patrick L Scheib (6 out of 6 patents)

12.  David E Johnston (6 out of 6 patents)

13.  Robert P Laplante (5 out of 5 patents)

14.  Saikrishna Sundararaman (5 out of 5 patents)

15.  Darin Battles (5 out of 5 patents)


Core Competencies:
Seal Technology
Radial Bearings
Thermoplastic Materials
Contamination Exclusion
Hydrodynamic Features
Gasket Design
Valve Stem Seals
Energy Saving Seals
High Pressure Seals
Plastic Components
Fuel Cell Sealing
Dynamic Seals

225 patents:

1. 12442473 - Non-round plug and seal with radial offset capabilities (2025-10-14),
2. 12410866 - Seal cartridge with electrically conductive non-woven grounding (2025-09-09),
3. 12404929 - Coolant tube seal (2025-09-02),
4. 12281703 - Outboard drive axle hub seal with venting (2025-04-21),
5. 12188561 - High pressure offset seal (2025-01-07),
6. 12110920 - High performance plastic radial bearings for rotating and reciprocating applications (2024-10-08),
7. 11933402 - Rubber gasket with molded-in plastic compression limiter (2024-03-19),
8. 11760933 - Thermally conductive electrically insulating thermoplastic materials (2023-09-19),
9. 11754188 - Seal cartridge with electrically conductive non-woven grounding (2023-09-12),
10. 11359724 - Contamination exclusion for seal ring with conductive nonwoven fiber (2022-06-14),
11. 11255382 - Plastic slinger with contacting bumper feature with labyrinth (2022-02-22),
12. 11125336 - Self energized seal (2021-09-21),
13. 11123852 - Two-piece pinion tool (2021-09-21),
14. 11028954 - Accumulator having a diaphragm or bladder with a metallized barrier film (2021-06-08),
15. 10955006 - Radial shaft seal with dynamic exclusion of contamination (2021-03-23),
Freudenberg-NOK General Partnership is a joint venture between Freudenberg SE and NOK Corporation. It is a leading supplier of advanced sealing technologies to various industries, including automotive, aerospace, energy, and more. The company focuses on providing high-quality products and solutions that meet the highest standards of performance and reliability. With a global presence and a strong commitment to innovation, Freudenberg-NOK General Partnership is dedicated to exceeding customer expectations.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 9 2025

225 Patents

#4 in Plymouth, MI

#81 in Michigan

#1,778 in US

#3,679 in the World

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Plymouth, MI, United States of America

Freudenberg-nok General Partnership

Forward Citations = 1,719

161 inventors:

goldMedal Edward Hosung Park (26 out of 26 patents)

silverMedal Alexander Berdichevsky (22 out of 22 patents)

bronzeMedal John C Dahlheimer (15 out of 16 patents)

4.  David Sakata (11 out of 11 patents)

5.  Francis Joseph Walker (11 out of 12 patents)

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