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Gunma-ken, Japan

Tokyo Parts Industrial Co., Ltd.

USPTO Granted Patents = 90

EPO Patents = 3

Forward Citations = 481

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32 inventors (with patents filed for the assignee):

Tadao Yamaguchi (36 out of 37 patents)

Masahiro Nishidate (14 out of 14 patents)

Takahisa Kitahara (12 out of 12 patents)

4. Naohisa Koyanagi (10 out of 10 patents)

5. Mamoru Kubo (6 out of 20 patents)

6. Tetsushi Yashima (6 out of 6 patents)

7. Katsuhito Sohara (4 out of 4 patents)

8. Masahiro Takagi (4 out of 4 patents)

9. Toru Arai (4 out of 4 patents)

10. Koichi Nakajima (4 out of 4 patents)

11. Takami Sawaguchi (3 out of 3 patents)

12. Satoru Shimosegawa (3 out of 3 patents)

13. Kentaro Fujii (3 out of 3 patents)

14. Akihisa Inoue (3 out of 3 patents)

15. Masahisa Tuchiya (2 out of 2 patents)

Core Competencies:

Brushless Motors

Capacitive Proximity Sensors

Haptic Solenoids

Spindle Motors

Eccentric Rotors

Vibration Motors

Illumination Devices

Antenna Devices

Motor Actuators

Push Switches

Bearing Retainers

Door Handle Devices

90 patents: Sort by Forward Citations

1. 11799345 - Stator and brushless motor and motor actuator using the stator (2023-10-24),

2. 11437993 - Capacitive proximity sensor (2022-09-06),

3. 11352811 - Capacitive proximity sensor (2022-06-07),

4. 11226213 - Capacitive proximity sensor (2022-01-18),

5. 10935685 - Capacitive proximity sensor and human body detection method using capacitive proximity sensor (2021-03-02),

6. 10886824 - Motor and actuator unit (2021-01-05),

7. 10796843 - Antenna coil and antenna device (2020-10-06),

8. 10794560 - Illumination device (2020-10-06),

9. 10637167 - Switch mounting device and push switch (2020-04-28),

10. 10608499 - Bearing retainer for vibration motor (2020-03-31),

11. 10597913 - Door handle device (2020-03-24),

12. 10439286 - Antenna device (2019-10-08),

13. 10340773 - Brushless motor having an outer rotor and an annular separation plate between the drive magnet and the position detection magnet (2019-07-02),

14. 10320264 - Brushless motor (2019-06-11),

15. 10312771 - Brushless motor (2019-06-04),

Tokyo Parts Industrial Co., Ltd. is a leading manufacturer and supplier of high-quality industrial parts based in Tokyo, Japan. With a wide range of products including machinery components, electronic parts, and automotive accessories, we serve various industries worldwide. Our company focuses on delivering precision-engineered parts that meet international standards and exceed customer expectations. By consistently investing in research and development, we strive to innovate and enhance our product offerings. Visit our website to explore our product catalog and learn more about our commitment to delivering reliable and efficient industrial solutions.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

90 Patents

#1 in

#1,172 in

#8,253 in the World

Gunma-ken, Japan

Tokyo Parts Industrial Co., Ltd.

Forward Citations = 481

32 inventors:

Tadao Yamaguchi (36 out of 37 patents)

Masahiro Nishidate (14 out of 14 patents)

Takahisa Kitahara (12 out of 12 patents)

4. Naohisa Koyanagi (10 out of 10 patents)

5. Mamoru Kubo (6 out of 20 patents)

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