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Tachikawa Spring Co., Ltd.

USPTO Granted Patents = 111

Forward Citations = 2,419

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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 Seat

Cushioning Body

Thigh Support Device

Headrest Unit

Seat Frame

Trim Cover Assembly

Seat Suspension

Adjustment Device

Lumbar Support

Reclining Adjuster

Weight Adjustment

Passive Restraint

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),

Company Overview

Tachikawa Spring Co., Ltd., based in Tokyo, specializes in the design and manufacture of advanced vehicle seating solutions. The company focuses on enhancing comfort and functionality through innovative technologies, including cushioning bodies, thigh support devices, and headrest units. Their expertise extends to seat frames, trim cover assemblies, seat suspensions, and adjustment devices, positioning them as a key player in the automotive industry. Tachikawa Spring is committed to improving the driving experience by integrating ergonomic design with high-quality materials.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

111 Patents

#514 in Tokyo

#1,056 in Japan

#7,114 in the World

Tachikawa Spring Co., Ltd.

Forward Citations = 2,419

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)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tachikawa Spring Co., Ltd.. Retrieved from https://idiyas.com/company/tachikawa-spring-company

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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