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Jtekt Corporation

USPTO Granted Patents = 2,423

CIPO Patents = 2

EPO Patents = 1,671

Trademarks = 67

Forward Citations = 6,076

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1,989 inventors (with patents filed for the assignee):

Terutaka Tamaizumi (58 out of 62 patents)

Shigeo Kamamoto (58 out of 60 patents)

Takashi Kodera (52 out of 52 patents)

4. Junji Murata (49 out of 49 patents)

5. Yuji Fujita (39 out of 41 patents)

6. Isao Namikawa (38 out of 39 patents)

7. Shigeki Nagase (38 out of 46 patents)

8. Yuji Kariatsumari (35 out of 38 patents)

9. Yuki Shishihara (32 out of 32 patents)

10. Takeshi Ueda (32 out of 37 patents)

11. Masaharu Yamashita (30 out of 44 patents)

12. Kunihiko Suzuki (29 out of 147 patents)

13. Toshiyuki Saito (28 out of 33 patents)

14. Hiroshi Ueno (28 out of 83 patents)

15. Shingo Maeda (27 out of 38 patents)

Core Competencies:

Steering Control Device

Motor Control Device

Steer-By-Wire Steering System

Vehicle Power Supply System

Tapered Roller Bearing

Constant-Speed Universal Joint

Differential Gear

Motion Assisting Device

Electric Power Source Apparatus

Grease Composition

Vehicle Control Unit

Ultrasonic Inspection Apparatus

2,423 patents: Sort by Forward Citations

1. 12522285 - Steering device (2026-01-13),

2. 12522222 - Zero point estimation device, zero point estimation method, and non-transitory computer-readable medium (2026-01-13),

3. 12516698 - Carburized bearing (2026-01-06),

4. 12515735 - Steering control device (2026-01-06),

5. 12503155 - Vehicle control device (2025-12-23),

6. 12503153 - Steering control device and steering control method (2025-12-23),

7. 12497101 - Steering control device and steering control method (2025-12-16),

8. 12497092 - Steering control device and steering control method (2025-12-16),

9. 12485964 - Motor control device (2025-12-02),

10. 12485960 - Steering control device (2025-12-02),

11. 12485959 - Motor control device (2025-12-02),

12. 12480588 - Valve assembly (2025-11-25),

13. 12480569 - Pulley with two flanges, and method of producing pulley with two flanges (2025-11-25),

14. 12480190 - Steel (2025-11-25),

15. 12473510 - Grease composition and steering gear device (2025-11-18),

JTEKT Corporation is a Japan-based company primarily engaged in the manufacture and sale of bearings, machine tools, steering systems, driveline components, and other automotive components. The company operates through three business segments: Automotive Systems, Industrial Systems, and Other Products. JTEKT's automotive products include steering columns, electric power steering systems, driveline components, and more. Its industrial products consist of machine tools, ball screws, and linear guides. The company operates globally and is committed to providing innovative solutions that contribute to the advancement of industries and society as a whole.

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

Company Badge

USPTO Data Jan 1 1976 - Jan 13 2026

2,423 Patents

#15 in Osaka

#100 in Japan

#395 in the World

Jtekt Corporation

Forward Citations = 6,076

1,989 inventors:

Terutaka Tamaizumi (58 out of 62 patents)

Shigeo Kamamoto (58 out of 60 patents)

Takashi Kodera (52 out of 52 patents)

4. Junji Murata (49 out of 49 patents)

5. Yuji Fujita (39 out of 41 patents)

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