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Tachikawa Spring Co., Ltd.

USPTO Granted Patents = 111

Forward Citations = 2,406

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81 inventors (with patents filed for the assignee):

Muneharu Urai (13 out of 30 patents)

Takao Sakamoto (11 out of 19 patents)

Takaichi Nishino (8 out of 19 patents)

4. Tadafumi Abe (6 out of 12 patents)

5. Susumu Hatsutta (5 out of 5 patents)

6. Shigeki Kon (4 out of 7 patents)

7. Kenichi Sakurada (4 out of 5 patents)

8. Akira Nemoto (3 out of 27 patents)

9. Takashi Yasui (3 out of 5 patents)

10. Makoto Shimada (3 out of 16 patents)

11. Shigeru Kanai (3 out of 13 patents)

12. Akira Aoki (3 out of 11 patents)

13. Toshio Furukawa (3 out of 6 patents)

14. Genziro Takagi (3 out of 3 patents)

15. Toshio Yoshizawa (3 out of 3 patents)

Core Competencies:

Vehicle Seats

Cushioning Body

Thigh Support Device

Head Rest Unit

Trim Cover Assembly

Seat Frame

Seat Suspension

Weight Adjustment Device

Vertical Adjustment Support

Arm Rest Housing

Manufacturing Process

Automotive Seat

111 patents: Sort by Forward Citations

1. 4883318 - Vehicle seat (1989-11-28),

2. 4856844 - Cushioning body of a seat for vehicles (1989-08-15),

3. 4767155 - Seat for vehicles providing with a thigh supporting device (1988-08-30),

4. 4761035 - Seat cushion assembly (1988-08-02),

5. 4761034 - Head rest unit (1988-08-02),

6. 4753481 - Trim cover assembly of a seat and method of making same (1988-06-28),

7. 4753479 - Thigh support device in a seat for vehicles (1988-06-28),

8. 4749116 - Apparatus for forming a pipe frame (1988-06-07),

9. 4737226 - Method of manufacturing an automotive seat (1988-04-12),

10. 4722760 - Process for manufacturing a trim cover assembly of a seat (1988-02-02),

11. 4720141 - Seat for vehicles (1988-01-19),

12. 4715916 - Method for assembling a seat back (1987-12-29),

13. 4691963 - Tandem seat for a two-wheeled vehicle (1987-09-08),

14. 4686130 - Trim cover assembly for vehicle seats (1987-08-11),

15. 4673215 - Seat frame for automobile seats (1987-06-16),

Tachikawa Spring Co., Ltd. is a leading manufacturer of precision springs. With over 50 years of experience, we specialize in the production of high-quality springs for various industries. Our products are used in automobiles, electronics, medical devices, and more. We are committed to delivering reliable and innovative solutions to meet our customers' requirements. Visit our website to learn more about our products and services.

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

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

111 Patents

#450 in Tokyo

#1,031 in Japan

#6,920 in the World

Tachikawa Spring Co., Ltd.

Forward Citations = 2,406

81 inventors:

Muneharu Urai (13 out of 30 patents)

Takao Sakamoto (11 out of 19 patents)

Takaichi Nishino (8 out of 19 patents)

4. Tadafumi Abe (6 out of 12 patents)

5. Susumu Hatsutta (5 out of 5 patents)

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