Growing community of inventors

Tokyo, Japan

Tatsuya Eida

Average Co-Inventor Count = 3.00

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 = 24

Tatsuya Eida ↔ Tsutomu Sato (1 patent)Tatsuya Eida ↔ Keiko Ichinose (1 patent)Tatsuya EidaTatsuya Eida (1 patent)Tsutomu SatoTsutomu Sato (174 patents)Keiko IchinoseKeiko Ichinose (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ricoh Company, Ltd. (1 from 28,566 patents)


1 patent:

1. 4735839 - Optical information recording medium

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as of
12/28/2025
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