Kabushiki Kaisha Sigel

Calculating rank

USPTO Granted Patents = 7

% Expired Patents = 14.3

Forward Citations = 232

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6 inventors (with patents filed for the assignee):

Motoyasu Nakanishi (5 out of 20 patents)

Tetsuo Miyamura (2 out of 3 patents)

Shigeru Koshibe (2 out of 2 patents)

4. Hiroshi Chiba (2 out of 2 patents)

5. Suguru Ishikawa (2 out of 2 patents)

6. Masaaki Amano (1 out of 1 patent)

7 patents: Sort by Forward Citations

1. 6536567 - Inertia damper and method for manufacturing same (2003-03-25),

2. 6512314 - Stepping motor having characteristics of an inertia damper (2003-01-28),

3. 6042608 - Figure adjusting pad and process for manufacturing same (2000-03-28),

4. 5733335 - Figure adjusting pad and process for manufacturing same (1998-03-31),

5. 5340352 - Figure adjusting pad and process for manufacturing same (1994-08-23),

6. 4953861 - Ball hitting sports tool (1990-09-04),

7. 4948131 - Vibration dampening racket (1990-08-14),

Company Overview

Kabushiki Kaisha Sigel is a Japanese company specializing in the manufacturing and distribution of office supplies and stationery products. With a focus on quality and innovation, Sigel offers a wide range of products including notebooks, planners, pens, and desk accessories. The company is committed to providing functional and stylish solutions for organizing and enhancing the work environment.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

7 Patents

#2,290 in Tokyo

#5,462 in Japan

Tokyo, Japan