Growing community of inventors

Kitakyushu, Japan

Tsutomu Katayama

Average Co-Inventor Count = 6.46

ph-index = 2

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 = 19

Tsutomu Katayama ↔ Shinji Aoki (2 patents)Tsutomu Katayama ↔ Keita Kawamura (2 patents)Tsutomu Katayama ↔ Hitoshi Kimura (2 patents)Tsutomu Katayama ↔ Hiroshi Yoshida (1 patent)Tsutomu Katayama ↔ Tsutomu Higo (1 patent)Tsutomu Katayama ↔ Yasuhiro Sawada (1 patent)Tsutomu Katayama ↔ Katsumi Kengaku (1 patent)Tsutomu Katayama ↔ Chikara Kaido (1 patent)Tsutomu KatayamaTsutomu Katayama (2 patents)Shinji AokiShinji Aoki (118 patents)Keita KawamuraKeita Kawamura (9 patents)Hitoshi KimuraHitoshi Kimura (2 patents)Hiroshi YoshidaHiroshi Yoshida (71 patents)Tsutomu HigoTsutomu Higo (14 patents)Yasuhiro SawadaYasuhiro Sawada (5 patents)Katsumi KengakuKatsumi Kengaku (3 patents)Chikara KaidoChikara Kaido (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ebara Corporation (2 from 2,508 patents)

2. Shin Nippon Seitetsu Kabushiki Kaisha (1 from 1 patent)


2 patents:

1. 4294674 - Method of treating waste gas by irradiation

2. 4283937 - Method of detecting broken window foil of apparatus for treating waste

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as of
12/11/2025
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