Growing community of inventors

Hitachi, Japan

Kouya Yamada

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 = 21

Kouya Yamada ↔ Haruo Honda (1 patent)Kouya Yamada ↔ Toru Yoshida (1 patent)Kouya Yamada ↔ Shigetoshi Ouchi (1 patent)Kouya Yamada ↔ Yasunobu Fujita (1 patent)Kouya Yamada ↔ Minoru Hosoda (1 patent)Kouya Yamada ↔ Fumihisa Ichikawa (1 patent)Kouya YamadaKouya Yamada (1 patent)Haruo HondaHaruo Honda (11 patents)Toru YoshidaToru Yoshida (4 patents)Shigetoshi OuchiShigetoshi Ouchi (4 patents)Yasunobu FujitaYasunobu Fujita (3 patents)Minoru HosodaMinoru Hosoda (2 patents)Fumihisa IchikawaFumihisa Ichikawa (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi, Ltd. (1 from 42,517 patents)


1 patent:

1. 5576580 - DC power supply circuit

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1/11/2026
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