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Sugatsune Industrial Co., Ltd.

USPTO Granted Patents = 42

Forward Citations = 629

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23 inventors (with patents filed for the assignee):

Kazuyoshi Ohshima (13 out of 14 patents)

Tatsuya Hayakawa (7 out of 7 patents)

Ken Tsuneki (5 out of 5 patents)

4. Yojiro Nakayama (4 out of 4 patents)

5. Hiroyuki Ishii (3 out of 287 patents)

6. Seiji Sugasawara (3 out of 3 patents)

7. Seiichiro Tamura (3 out of 3 patents)

8. Masanori Sakurai (2 out of 8 patents)

9. Masatoshi Kawanabe (2 out of 3 patents)

10. Kazuhiko Sakamoto (2 out of 2 patents)

11. Takuma Harada (2 out of 5 patents)

12. Michio Sugasawara (2 out of 2 patents)

13. Kazuo Kotsuka (2 out of 2 patents)

14. Shinichirou Koshikawa (1 out of 1 patent)

15. Katsuya Imai (1 out of 1 patent)

Core Competencies:

Overhead Doors

Hinge Mechanisms

Antitheft Lock Assembly

Cabinet Door Props

Damper Mechanisms

Door Closers

Caster Technology

Folding Bed Apparatus

Toilet Seat Fixing Devices

Furniture Door Dampers

Sliding Door Rails

Reclining Chair Designs

42 patents: Sort by Forward Citations

1. 6361132 - Overhead doors (2002-03-26),

2. 6308376 - Hinge with a safety shield plate unit (2001-10-30),

3. 6296337 - Overhead doors (2001-10-02),

4. 6244080 - Antitheft lock assembly (2001-06-12),

5. 6119310 - Hinge unit (2000-09-19),

6. 5971514 - Cabinet door prop unit (1999-10-26),

7. 5904411 - Cabinet door prop unit (1999-05-18),

8. 5645333 - Overhead door (1997-07-08),

9. 5530993 - Device for holding a flap door to a horizontal position (1996-07-02),

10. 5353899 - Damper mechanism (1994-10-11),

11. 5274880 - Door closer (1994-01-04),

12. 5257852 - Damper device for an automatic folding chair (1993-11-02),

13. D339736 - Caster (1993-09-28),

14. 5231711 - Apparatus for opening and closing folding bed (1993-08-03),

15. D335812 - Door closer (1993-05-25),

Sugatsune Industrial Co., Ltd. is a leading manufacturer and distributor of high-quality hardware and components for various industries. Established in 1930 in Tokyo, Japan, Sugatsune has gained global recognition for its innovative solutions, exceptional craftsmanship, and commitment to customer satisfaction. With a wide range of products including hinges, drawer slides, handles, and access control systems, Sugatsune strives to provide functional and aesthetically pleasing solutions to enhance the performance and appearance of buildings, furniture, and equipment. Their website offers detailed product information, technical resources, and a convenient platform for purchasing Sugatsune's products worldwide.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

42 Patents

#777 in Tokyo

#1,867 in Japan

#15,862 in the World

Sugatsune Industrial Co., Ltd.

Forward Citations = 629

23 inventors:

Kazuyoshi Ohshima (13 out of 14 patents)

Tatsuya Hayakawa (7 out of 7 patents)

Ken Tsuneki (5 out of 5 patents)

4. Yojiro Nakayama (4 out of 4 patents)

5. Hiroyuki Ishii (3 out of 287 patents)

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