Growing community of inventors

Ibaraki, Japan

Kei Tanaka

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 = 2

Kei TanakaMasayuki Hirafuji (1 patent)Kei TanakaTokihiro Fukatsu (1 patent)Kei TanakaKeiko Ibaraki (1 patent)Kei TanakaKei Tanaka (1 patent)Masayuki HirafujiMasayuki Hirafuji (4 patents)Tokihiro FukatsuTokihiro Fukatsu (2 patents)Keiko IbarakiKeiko Ibaraki (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. National Space Development Agency of Japan (1 from 38 patents)

2. Incorporated Administrative Agency, National Agriculture and Bio-oriented Research Organization (1 from 18 patents)

3. Japan Space Forum (1 from 2 patents)


1 patent:

1. 7748164 - Micro gravity environmental control apparatus and micro gravity environmental control method

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as of
12/12/2025
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