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Hitachi, Japan

Hisao Nakayama

Average Co-Inventor Count = 4.44

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 = 15

Hisao Nakayama ↔ Hiroyuki Noda (2 patents)Hisao Nakayama ↔ Hiroto Nakai (2 patents)Hisao Nakayama ↔ Kichiro Kikuchi (2 patents)Hisao Nakayama ↔ Kunihito Kawamura (1 patent)Hisao NakayamaHisao Nakayama (2 patents)Hiroyuki NodaHiroyuki Noda (69 patents)Hiroto NakaiHiroto Nakai (2 patents)Kichiro KikuchiKichiro Kikuchi (2 patents)Kunihito KawamuraKunihito Kawamura (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi Information & Control Solutions, Ltd. (2 from 18 patents)


2 patents:

1. D602021 - Biometrics input unit

2. D569286 - Biometrics input unit

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as of
12/12/2025
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