Growing community of inventors

Hitachi, Japan

Tsuyoshi Koyama

Average Co-Inventor Count = 14.01

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 = 8

Tsuyoshi KoyamaAkira Shimizu (1 patent)Tsuyoshi KoyamaToshio Ogiso (1 patent)Tsuyoshi KoyamaChikara Hiraoka (1 patent)Tsuyoshi KoyamaShigeru Obata (1 patent)Tsuyoshi KoyamaMasaru Nakano (1 patent)Tsuyoshi KoyamaShogo Matsumoto (1 patent)Tsuyoshi KoyamaToru Hanashima (1 patent)Tsuyoshi KoyamaKazuo Kikuchi (1 patent)Tsuyoshi KoyamaKazushige Oonishi (1 patent)Tsuyoshi KoyamaHiromitsu Fukuda (1 patent)Tsuyoshi KoyamaKatsuyoshi Onose (1 patent)Tsuyoshi KoyamaShoji Ukei (1 patent)Tsuyoshi KoyamaToru Ohashi (1 patent)Tsuyoshi KoyamaTsuyoshi Koyama (1 patent)Akira ShimizuAkira Shimizu (122 patents)Toshio OgisoToshio Ogiso (28 patents)Chikara HiraokaChikara Hiraoka (24 patents)Shigeru ObataShigeru Obata (20 patents)Masaru NakanoMasaru Nakano (14 patents)Shogo MatsumotoShogo Matsumoto (13 patents)Toru HanashimaToru Hanashima (12 patents)Kazuo KikuchiKazuo Kikuchi (12 patents)Kazushige OonishiKazushige Oonishi (7 patents)Hiromitsu FukudaHiromitsu Fukuda (7 patents)Katsuyoshi OnoseKatsuyoshi Onose (5 patents)Shoji UkeiShoji Ukei (5 patents)Toru OhashiToru Ohashi (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ricoh Printing Systems, Ltd. (1 from 129 patents)


1 patent:

1. 6928257 - Image forming and recording apparatus with three pressure members

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