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Ntn Corporation

USPTO Granted Patents = 2,464

CIPO Patents = 4

EPO Patents = 1,076

Trademarks = 18

Forward Citations = 12,036

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1,350 inventors (with patents filed for the assignee):

Yui Masuda (68 out of 68 patents)

Takayoshi Ozaki (68 out of 83 patents)

Toru Takahashi (68 out of 77 patents)

4. Hiroshi Isobe (67 out of 82 patents)

5. Takayuki Norimatsu (63 out of 63 patents)

6. Hisashi Ohtsuki (58 out of 58 patents)

7. Tatsuro Sugiyama (50 out of 52 patents)

8. Hisaaki Kura (41 out of 41 patents)

9. Koji Sato (40 out of 41 patents)

10. Ken Yamamoto (40 out of 44 patents)

11. Masahiro Ozawa (40 out of 40 patents)

12. Masazumi Kobayashi (39 out of 39 patents)

13. Chikara Ohki (39 out of 39 patents)

14. Akira Torii (39 out of 39 patents)

15. Eiji Tajima (39 out of 39 patents)

Core Competencies:

Constant Velocity Universal Joint

Electric Oil Pump

Fluid Dynamic Bearing

Rolling Bearing

Electric Actuator

Power Generation System

Condition Monitoring System

Wind Power Generation

Magnet Holder

Spherical Surface Link Mechanism

Load Sensor Element

Portable Energy Facility

2,464 patents: Sort by Forward Citations

1. D1106404 - Seal for flow control valve (2025-12-16),

2. 12498025 - Feed screw mechanism and electric actuator (2025-12-16),

3. 12460680 - Tripod type constant velocity universal joint (2025-11-04),

4. 12448972 - Electric oil pump (2025-10-21),

5. 12442415 - Cage and ball bearing (2025-10-14),

6. 12442414 - Oil-impregnated sintered bearing and fluid dynamic bearing device provided with the bearing (2025-10-14),

7. 12435759 - Bearing device and electric vertical take-off and landing aircraft (2025-10-07),

8. 12429095 - Plunging-type constant velocity universal joint (2025-09-30),

9. 12427651 - Parallel link mechanism and link operation device (2025-09-30),

10. 12404898 - Sealed bearing (2025-09-02),

11. 12404896 - Fluid dynamic bearing, fluid dynamic bearing device, and motor (2025-09-02),

12. 12392685 - Rotational torque inspection method for bearing device for vehicle wheel, and rotational torque inspection device for bearing device for vehicle wheel (2025-08-19),

13. 12384018 - Parallel link mechanism and link operation device (2025-08-12),

14. 12381451 - Control device for power generation device (2025-08-05),

15. 12379020 - Electric actuator (2025-08-05),

NTN Corporation is a leading manufacturer of bearings, constant velocity joints, and other precision industrial and automotive equipment. With headquarters in Osaka, Japan, NTN operates globally and serves a diverse range of industries including automotive, industrial machinery, aerospace, and more. The company's commitment to quality, innovation, and customer satisfaction has made NTN a trusted name in the industry for over a century.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

2,464 Patents

#14 in Osaka

#99 in Japan

#385 in the World

Ntn Corporation

Forward Citations = 12,036

1,350 inventors:

Yui Masuda (68 out of 68 patents)

Takayoshi Ozaki (68 out of 83 patents)

Toru Takahashi (68 out of 77 patents)

4. Hiroshi Isobe (67 out of 82 patents)

5. Takayuki Norimatsu (63 out of 63 patents)

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