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Nsk-warner K.k.

USPTO Granted Patents = 363

EPO Patents = 18

Forward Citations = 2,088

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205 inventors (with patents filed for the assignee):

Yoshio Kinoshita (42 out of 48 patents)

Kazuhiko Muramatsu (28 out of 31 patents)

Hirobumi Shirataki (27 out of 31 patents)

4. Tomoharu Ando (19 out of 20 patents)

5. Tomoyuki Miyazaki (18 out of 19 patents)

6. Hiroshi Yabe (16 out of 18 patents)

7. Katsuyasu Ono (14 out of 44 patents)

8. Masao Shoji (13 out of 13 patents)

9. Yasuhide Takasu (12 out of 12 patents)

10. Akira Iwano (11 out of 11 patents)

11. Ritsuo Toya (11 out of 11 patents)

12. Hirofumi Ogata (11 out of 11 patents)

13. Osamu Kawai (11 out of 34 patents)

14. Shigeki Umezawa (11 out of 23 patents)

15. Takeo Ueda (11 out of 17 patents)

Core Competencies:

Ratchet Type Clutch

One-Way Clutch

Friction Plate

Wet Multi-Plate Clutch

Liquid Pressure Generating Apparatus

Starting Clutch

Differentially Controllable Two-Way Clutch

Roller-Type One-Way Clutch

Vehicle Drive Device

Clutch Apparatus

Unidirectional Clutch

Phenol Resin Composition

363 patents: Sort by Forward Citations

1. 12467509 - Ratchet type clutch device and vehicle drive device (2025-11-11),

2. 12234868 - Ratchet type one-way clutch apparatus (2025-02-25),

3. 12222011 - Clutch device (2025-02-11),

4. 12215746 - Ratchet type one-way clutch apparatus (2025-02-04),

5. 11512754 - Phenol resin for wet friction material, phenol resin composition, and wet friction material (2022-11-29),

6. 11512744 - Clutch apparatus (2022-11-29),

7. 11261923 - Clutch apparatus (2022-03-01),

8. 10995805 - Structure of ratchet type one-way clutch (2021-05-04),

9. 10823234 - Annular member stopping structure for friction engaging device (2020-11-03),

10. 10801561 - One way clutch (2020-10-13),

11. 10663017 - Clutch apparatus (2020-05-26),

12. 10655691 - One-way clutch apparatus (2020-05-19),

13. 10544841 - Multiplate wet clutch (2020-01-28),

14. 10487888 - One-way clutch (2019-11-26),

15. 10422392 - Unidirectional clutch (2019-09-24),

NSK-WARNER K.K. is a Japanese company specializing in the production and distribution of automotive parts and industrial machinery. With a track record of innovation and quality, they provide a wide range of products including bearings, steering systems, and linear motion components. Their website offers detailed information about their product portfolio, manufacturing capabilities, and global presence.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 2 2025

363 Patents

#204 in Tokyo

#451 in Japan

#2,449 in the World

Nsk-warner K.k.

Forward Citations = 2,088

205 inventors:

Yoshio Kinoshita (42 out of 48 patents)

Kazuhiko Muramatsu (28 out of 31 patents)

Hirobumi Shirataki (27 out of 31 patents)

4. Tomoharu Ando (19 out of 20 patents)

5. Tomoyuki Miyazaki (18 out of 19 patents)

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