Growing community of inventors

Wakayama, Japan

Akira Umada

Average Co-Inventor Count = 3.33

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 = 35

Akira UmadaTakehiro Tsutsumi (1 patent)Akira UmadaKoji Azuma (1 patent)Akira UmadaShigeyoshi Tanaka (1 patent)Akira UmadaNobushige Tanaka (1 patent)Akira UmadaHiromi Nambu (1 patent)Akira UmadaNobuyuki Takizawa (1 patent)Akira UmadaTakayuki Amiya (1 patent)Akira UmadaTadashi Igarashi (1 patent)Akira UmadaYoshihiko Watanabe (1 patent)Akira UmadaAkira Umada (3 patents)Takehiro TsutsumiTakehiro Tsutsumi (22 patents)Koji AzumaKoji Azuma (14 patents)Shigeyoshi TanakaShigeyoshi Tanaka (12 patents)Nobushige TanakaNobushige Tanaka (7 patents)Hiromi NambuHiromi Nambu (7 patents)Nobuyuki TakizawaNobuyuki Takizawa (7 patents)Takayuki AmiyaTakayuki Amiya (6 patents)Tadashi IgarashiTadashi Igarashi (4 patents)Yoshihiko WatanabeYoshihiko Watanabe (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kao Corporation (3 from 3,602 patents)


3 patents:

1. 7741386 - Water-based ink for inkjet printing

2. 6600079 - Process for production of 5-arylpentanols

3. 5883158 - Process for producing improved super absorbent polymer

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as of
12/27/2025
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