Growing community of inventors

Sapporo, Japan

Akio Kawakura

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 = 5

Akio KawakuraEiji Sakashita (1 patent)Akio KawakuraHiroshi Kamogawa (1 patent)Akio KawakuraMotoki Yonekawa (1 patent)Akio KawakuraAkio Kawakura (1 patent)Eiji SakashitaEiji Sakashita (6 patents)Hiroshi KamogawaHiroshi Kamogawa (5 patents)Motoki YonekawaMotoki Yonekawa (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Otsuka Pharmaceutical Factory, Inc. (1 from 188 patents)


1 patent:

1. 5314624 - Process for filtering plasma and regenerating a secondary filter therefor

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12/19/2025
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