Growing community of inventors

Ibaraki, Japan

Kin-ichi Shirakawa

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 = 9

Kin-ichi Shirakawa ↔ Seiichi Igarashi (1 patent)Kin-ichi Shirakawa ↔ Kazuo Kimura (1 patent)Kin-ichi Shirakawa ↔ Akira Ogino (1 patent)Kin-ichi ShirakawaKin-ichi Shirakawa (1 patent)Seiichi IgarashiSeiichi Igarashi (2 patents)Kazuo KimuraKazuo Kimura (1 patent)Akira OginoAkira Ogino (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Takeda Chemical Ind., Ltd. (1 from 8 patents)


1 patent:

1. 3953169 - Paperboard impregnated with polyurethane resin

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as of
12/19/2025
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