Growing community of inventors

Fuji, Japan

Akira Ohnuma

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 = 1

Akira Ohnuma ↔ Yoshio Hayashi (1 patent)Akira Ohnuma ↔ Shuichiro Ogawa (1 patent)Akira Ohnuma ↔ Masahiko Sanada (1 patent)Akira OhnumaAkira Ohnuma (1 patent)Yoshio HayashiYoshio Hayashi (11 patents)Shuichiro OgawaShuichiro Ogawa (4 patents)Masahiko SanadaMasahiko Sanada (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Asahi Kasei Kogyo Kabushiki Kaisha (1 from 1,297 patents)


1 patent:

1. 4893148 - Method for storing dry silver salt roll film for rotary type

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1/13/2026
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