Growing community of inventors

Tokyo, Japan

Kosaku Otsubo

Average Co-Inventor Count = 8.00

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 = 3

Kosaku Otsubo ↔ Nobuo Yoshida (1 patent)Kosaku Otsubo ↔ Toshio Sawa (1 patent)Kosaku Otsubo ↔ Shigeoki Nishimura (1 patent)Kosaku Otsubo ↔ Tsukasa Nishimura (1 patent)Kosaku Otsubo ↔ Seiichi Kikkawa (1 patent)Kosaku Otsubo ↔ Kouji Otani (1 patent)Kosaku Otsubo ↔ Ikuo Shimokobe (1 patent)Kosaku OtsuboKosaku Otsubo (1 patent)Nobuo YoshidaNobuo Yoshida (41 patents)Toshio SawaToshio Sawa (15 patents)Shigeoki NishimuraShigeoki Nishimura (11 patents)Tsukasa NishimuraTsukasa Nishimura (7 patents)Seiichi KikkawaSeiichi Kikkawa (5 patents)Kouji OtaniKouji Otani (4 patents)Ikuo ShimokobeIkuo Shimokobe (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi, Ltd. (1 from 42,485 patents)

2. Hitachi Plant Engineering Construction Co., Ltd. (1 from 56 patents)

3. Babcock-hitachi K.k. (1 from 26 patents)


1 patent:

1. 4154673 - Method of treatment of waste water containing sulfur compounds

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12/5/2025
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