Growing community of inventors

Tottori, Japan

Keiichi Fukuyama

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 = 4

Keiichi Fukuyama ↔ Hidenori Kumobayashi (1 patent)Keiichi Fukuyama ↔ Susumu Akutagawa (1 patent)Keiichi Fukuyama ↔ Jitsuo Kiji (1 patent)Keiichi Fukuyama ↔ Tamon Okano (1 patent)Keiichi Fukuyama ↔ Hisatoshi Konishi (1 patent)Keiichi Fukuyama ↔ Yasunobu Shimano (1 patent)Keiichi FukuyamaKeiichi Fukuyama (1 patent)Hidenori KumobayashiHidenori Kumobayashi (69 patents)Susumu AkutagawaSusumu Akutagawa (31 patents)Jitsuo KijiJitsuo Kiji (1 patent)Tamon OkanoTamon Okano (1 patent)Hisatoshi KonishiHisatoshi Konishi (1 patent)Yasunobu ShimanoYasunobu Shimano (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Takasago Perfumery Co., Ltd. (1 from 47 patents)


1 patent:

1. 4705895 - 5,5'-diamino or

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as of
12/16/2025
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