Growing community of inventors

Yokohama, Japan

Toraichi Sirakawa

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 = 7

Toraichi SirakawaHideki Muroya (1 patent)Toraichi SirakawaToraichi Sirakawa (1 patent)Hideki MuroyaHideki Muroya (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

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


1 patent:

1. 4652934 - Facsimile transceiver equipped with broadcasting feature

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1/6/2026
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