Growing community of inventors

Fukuoka, Japan

Ryuichi Katayama

Average Co-Inventor Count = 4.00

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 = 0

Ryuichi Katayama ↔ Satoshi Sugiura (1 patent)Ryuichi Katayama ↔ Takayuki Kasuya (1 patent)Ryuichi Katayama ↔ Katsumi Yoshizawa (1 patent)Ryuichi KatayamaRyuichi Katayama (1 patent)Satoshi SugiuraSatoshi Sugiura (48 patents)Takayuki KasuyaTakayuki Kasuya (8 patents)Katsumi YoshizawaKatsumi Yoshizawa (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. School Juridical Person of Fukuoka Kogyo Daigaku (1 from 6 patents)

2. Innovastella Co., Ltd (1 from 1 patent)


1 patent:

1. 10079032 - Device and recording apparatus

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as of
12/17/2025
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