Growing community of inventors

Shiogama, Japan

Keiichi Sato

Average Co-Inventor Count = 2.00

ph-index = 1

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 = 9

Keiichi Sato ↔ Osamu Shigenai (1 patent)Keiichi SatoKeiichi Sato (1 patent)Osamu ShigenaiOsamu Shigenai (8 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Alps Electric Co., Ltd. (1 from 4,048 patents)


1 patent:

1. 5005092 - Shutter opening device

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as of
12/15/2025
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