Growing community of inventors

Osaka, Japan

Katsuhisa Yamada

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 = 30

Katsuhisa Yamada ↔ Shoji Nishiyama (1 patent)Katsuhisa Yamada ↔ Yasukazu Nakayama (1 patent)Katsuhisa Yamada ↔ Shigetoyo Sawaki (1 patent)Katsuhisa Yamada ↔ Kazufumi Naitoh (1 patent)Katsuhisa Yamada ↔ Yoichi Shimatani (1 patent)Katsuhisa YamadaKatsuhisa Yamada (1 patent)Shoji NishiyamaShoji Nishiyama (11 patents)Yasukazu NakayamaYasukazu Nakayama (5 patents)Shigetoyo SawakiShigetoyo Sawaki (3 patents)Kazufumi NaitohKazufumi Naitoh (1 patent)Yoichi ShimataniYoichi Shimatani (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Shiseido Company, Limited (1 from 1,007 patents)


1 patent:

1. 5853705 - Anti-aging cosmetic composition

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as of
12/6/2025
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