Growing community of inventors

Tokyo, Japan

Shigeo Sakai

Average Co-Inventor Count = 1.71

ph-index = 3

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 40

Shigeo Sakai ↔ Hiroshi Kawamata (1 patent)Shigeo Sakai ↔ Keisuke Shinbori (1 patent)Shigeo Sakai ↔ Tokiya Ando (1 patent)Shigeo Sakai ↔ Yasuyuki Sugimoto (1 patent)Shigeo SakaiShigeo Sakai (3 patents)Hiroshi KawamataHiroshi Kawamata (5 patents)Keisuke ShinboriKeisuke Shinbori (1 patent)Tokiya AndoTokiya Ando (1 patent)Yasuyuki SugimotoYasuyuki Sugimoto (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Seiko Instruments Inc (1 from 2,899 patents)

2. Toyo Soda Manufacturing Co., Ltd. (1 from 285 patents)

3. Seiko Instruments & Electronics Ltd. (1 from 127 patents)


3 patents:

1. D361529 - Wristwatch

2. D278039 - Pocket watch

3. 4264373 - Method of refining beet juice

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idiyas.com
as of
12/7/2025
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