Growing community of inventors

Fujisawa, Japan

Toshikatsu Kiriyama

Average Co-Inventor Count = 2.00

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 = 2

Toshikatsu Kiriyama ↔ Yoshiro Hasegawa (1 patent)Toshikatsu KiriyamaToshikatsu Kiriyama (1 patent)Yoshiro HasegawaYoshiro Hasegawa (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi, Ltd. (1 from 42,494 patents)


1 patent:

1. 4231017 - Switching matrix equipment having a series circuit of relay coil and

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as of
12/16/2025
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