Growing community of inventors

Yokohama, Japan

Susumu Otsuka

Average Co-Inventor Count = 5.46

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 = 4

Susumu Otsuka ↔ Keiichi Tanikawa (2 patents)Susumu Otsuka ↔ Tadashi Tanaka (1 patent)Susumu Otsuka ↔ Akiyoshi Inubushi (1 patent)Susumu Otsuka ↔ Takao Saito (1 patent)Susumu Otsuka ↔ Tatsuro Obi (1 patent)Susumu Otsuka ↔ Isao Manabe (1 patent)Susumu Otsuka ↔ Chiaki Maeda (1 patent)Susumu Otsuka ↔ Tatsurou Obi (1 patent)Susumu OtsukaSusumu Otsuka (2 patents)Keiichi TanikawaKeiichi Tanikawa (7 patents)Tadashi TanakaTadashi Tanaka (11 patents)Akiyoshi InubushiAkiyoshi Inubushi (9 patents)Takao SaitoTakao Saito (5 patents)Tatsuro ObiTatsuro Obi (4 patents)Isao ManabeIsao Manabe (4 patents)Chiaki MaedaChiaki Maeda (1 patent)Tatsurou ObiTatsurou Obi (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Nippon Steel Corporation (2 from 3,562 patents)


2 patents:

1. 4354881 - Method for antirust treatment of steel stocks

2. 4104419 - Surface treatment of a tin-plate

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1/5/2026
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