Growing community of inventors

Ibaraki, Japan

Tuyoshi Koyama

Average Co-Inventor Count = 7.00

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 = 12

Tuyoshi Koyama ↔ Toshio Ogiso (1 patent)Tuyoshi Koyama ↔ Chikara Hiraoka (1 patent)Tuyoshi Koyama ↔ Kazuo Kikuchi (1 patent)Tuyoshi Koyama ↔ Toru Hanashima (1 patent)Tuyoshi Koyama ↔ Tetsuji Takegoshi (1 patent)Tuyoshi Koyama ↔ Shoji Ukei (1 patent)Tuyoshi KoyamaTuyoshi Koyama (1 patent)Toshio OgisoToshio Ogiso (28 patents)Chikara HiraokaChikara Hiraoka (24 patents)Kazuo KikuchiKazuo Kikuchi (12 patents)Toru HanashimaToru Hanashima (12 patents)Tetsuji TakegoshiTetsuji Takegoshi (9 patents)Shoji UkeiShoji Ukei (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

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


1 patent:

1. 7142803 - Fixing device and image forming apparatus

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