Growing community of inventors

Yokohama, Japan

Yoichiro Yamakawa

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 = 3

Yoichiro Yamakawa ↔ Seiichi Mukai (1 patent)Yoichiro Yamakawa ↔ Masamichi Watanabe (1 patent)Yoichiro Yamakawa ↔ Tomiaki Kimura (1 patent)Yoichiro Yamakawa ↔ Masahiro Kita (1 patent)Yoichiro Yamakawa ↔ Kunihiro Takenaka (1 patent)Yoichiro YamakawaYoichiro Yamakawa (1 patent)Seiichi MukaiSeiichi Mukai (8 patents)Masamichi WatanabeMasamichi Watanabe (4 patents)Tomiaki KimuraTomiaki Kimura (1 patent)Masahiro KitaMasahiro Kita (1 patent)Kunihiro TakenakaKunihiro Takenaka (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Mitsubishi Chemical Industries Limited (1 from 614 patents)


1 patent:

1. 4079113 - Method for the preparation of fibers or films from phenolic resins

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as of
12/21/2025
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