Growing community of inventors

Tokyo, Japan

Seiji Ootsuka

Average Co-Inventor Count = 5.00

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 = 16

Seiji OotsukaMasayoshi Morimoto (1 patent)Seiji OotsukaSusumu Satou (1 patent)Seiji OotsukaYoshiyuki Ueno (1 patent)Seiji OotsukaTatsushi Kawai (1 patent)Seiji OotsukaSeiji Ootsuka (1 patent)Masayoshi MorimotoMasayoshi Morimoto (3 patents)Susumu SatouSusumu Satou (3 patents)Yoshiyuki UenoYoshiyuki Ueno (2 patents)Tatsushi KawaiTatsushi Kawai (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kajima Corporation (1 from 150 patents)

2. Research Institute of Innovative Technology for the Earth (1 from 44 patents)


1 patent:

1. 5464539 - Process for the production of hydrogen by microorganisms

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1/9/2026
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