Growing community of inventors

Tokyo, Japan

Katsuhiro Yamada

Average Co-Inventor Count = 2.40

ph-index = 2

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 = 22

Katsuhiro YamadaAkihiko Sekine (1 patent)Katsuhiro YamadaNobusuke Obata (1 patent)Katsuhiro YamadaTakaki Tokuyama (1 patent)Katsuhiro YamadaKatsuhiro Yamada (2 patents)Akihiko SekineAkihiko Sekine (25 patents)Nobusuke ObataNobusuke Obata (3 patents)Takaki TokuyamaTakaki Tokuyama (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kabushiki Kaisha Topcon (1 from 1,033 patents)

2. Topcon Corporation (1 from 526 patents)


2 patents:

1. 10561311 - Ophthalmic imaging apparatus and ophthalmic information processing apparatus

2. 8724870 - Ophthalmic observation apparatus

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1/9/2026
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