Growing community of inventors

Kanagawa, Japan

Ryohichi Ishikawa

Average Co-Inventor Count = 7.00

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 = 10

Ryohichi Ishikawa ↔ Naoto Watanabe (1 patent)Ryohichi Ishikawa ↔ Shinji Kato (1 patent)Ryohichi Ishikawa ↔ Shin Hasegawa (1 patent)Ryohichi Ishikawa ↔ Noboru Sawayama (1 patent)Ryohichi Ishikawa ↔ Masaichi Sawada (1 patent)Ryohichi Ishikawa ↔ Kayoko Ikegami (1 patent)Ryohichi IshikawaRyohichi Ishikawa (1 patent)Naoto WatanabeNaoto Watanabe (158 patents)Shinji KatoShinji Kato (103 patents)Shin HasegawaShin Hasegawa (101 patents)Noboru SawayamaNoboru Sawayama (38 patents)Masaichi SawadaMasaichi Sawada (13 patents)Kayoko IkegamiKayoko Ikegami (3 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. 6798996 - Image forming apparatus

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12/27/2025
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