EPO Patents = 1

Forward Citations = 213

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5 inventors (with patents filed for the assignee):

Ryokichi Yamazaki (7 out of 13 patents)

Satoshi Mizuno (1 out of 6 patents)

Ken Tsuneki (1 out of 5 patents)

4. Yojiro Nakayama (1 out of 4 patents)

5. Kazuyosh Ohshima (1 out of 1 patent)

6. Minoru c/o Kotobuki Corporation Fujisawa (0 patent)

9 patents: Sort by Forward Citations

1. D439428 - Connected chairs (2001-03-28),

2. RE37043 - Layable seat (2001-02-06),

3. 6055780 - Retractable stairs-like stand (2000-05-02),

4. 6000174 - Retractable stairs-like stand (1999-12-14),

5. D396967 - Seating unit (1998-08-18),

6. 5685608 - Folding seat and seating system having folding seat (1997-11-11),

7. 5328239 - Flip-up type seat (1994-07-12),

8. 5328238 - Layable seat (1994-07-12),

9. 5257852 - Damper device for an automatic folding chair (1993-11-02),

Kotobuki Corporation is a leading manufacturer of high-quality kitchenware and tableware products. With a commitment to innovation and craftsmanship, we offer a wide range of products that enhance the culinary experience for customers around the world. Our products are known for their durability, functionality, and elegant design. Visit our website to learn more about our company and products.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

9 Patents

#2,018 in Tokyo

#4,692 in Japan

Tokyo, Japan

Kotobuki Corporation