Growing community of inventors

Nagano, Japan

Yoshifumi Katayama

Average Co-Inventor Count = 2.00

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 = 1

Yoshifumi KatayamaJiro Kawai (1 patent)Yoshifumi KatayamaYoshifumi Katayama (1 patent)Jiro KawaiJiro Kawai (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Shinko Electric Industries Co., Ltd. (1 from 1,700 patents)


1 patent:

1. 9887117 - Electrostatic chuck and semiconductor-liquid crystal manufacturing apparatus

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1/6/2026
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