Growing community of inventors

Fukuyama, Japan

Toshitake Katayama

Average Co-Inventor Count = 6.00

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 = 5

Toshitake Katayama ↔ Hiroshi Kuwamoto (1 patent)Toshitake Katayama ↔ Shuichi Iwado (1 patent)Toshitake Katayama ↔ Sakae Sonoda (1 patent)Toshitake Katayama ↔ Shoji Okamoto (1 patent)Toshitake Katayama ↔ Koji Kaburagi (1 patent)Toshitake KatayamaToshitake Katayama (1 patent)Hiroshi KuwamotoHiroshi Kuwamoto (14 patents)Shuichi IwadoShuichi Iwado (7 patents)Sakae SonodaSakae Sonoda (5 patents)Shoji OkamotoShoji Okamoto (3 patents)Koji KaburagiKoji Kaburagi (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Nippon Kokan Kabushiki Kaisha (1 from 487 patents)


1 patent:

1. 4666617 - Cold rolling oil for steel sheet

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as of
1/21/2026
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