Growing community of inventors

Kanagawa, Japan

Hirofumi Katayama

Average Co-Inventor Count = 4.00

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 = 0

Hirofumi KatayamaKoichi Sato (2 patents)Hirofumi KatayamaNaohito Otsuki (2 patents)Hirofumi KatayamaToshikazu Takubo (2 patents)Hirofumi KatayamaHirofumi Katayama (2 patents)Koichi SatoKoichi Sato (169 patents)Naohito OtsukiNaohito Otsuki (15 patents)Toshikazu TakuboToshikazu Takubo (6 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Fuji Xerox Co., Ltd. (2 from 11,665 patents)


2 patents:

1. 7876349 - Image forming apparatus for forming an image in an accurate position

2. 7502047 - Image forming apparatus for forming an image in an accurate position

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12/9/2025
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