Growing community of inventors

Hitachi, Japan

Hideya Koshiyama

Average Co-Inventor Count = 2.86

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 = 47

Hideya KoshiyamaEtsurou Hirose (1 patent)Hideya KoshiyamaTamotsu Shikamori (1 patent)Hideya KoshiyamaTakuya Koshiyama (1 patent)Hideya KoshiyamaYoshinori Fujimori (1 patent)Hideya KoshiyamaKengi Natsuno (1 patent)Hideya KoshiyamaHideya Koshiyama (2 patents)Etsurou HiroseEtsurou Hirose (4 patents)Tamotsu ShikamoriTamotsu Shikamori (4 patents)Takuya KoshiyamaTakuya Koshiyama (1 patent)Yoshinori FujimoriYoshinori Fujimori (1 patent)Kengi NatsunoKengi Natsuno (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi, Ltd. (1 from 42,535 patents)

2. Hideya Koshiyama (1 from 1 patent)


2 patents:

1. 6705540 - Fluid spray apparatus

2. 5074131 - Dryer and washing/drying machine

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as of
1/22/2026
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