Growing community of inventors

Tokyo, Japan

Kazufumi Usui

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 = 31

Kazufumi UsuiHideyuki Shoji (1 patent)Kazufumi UsuiKazufumi Usui (1 patent)Hideyuki ShojiHideyuki Shoji (9 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Casio Computer Co., Ltd. (1 from 5,220 patents)


1 patent:

1. 4634953 - Electronic equipment with solar cell

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as of
12/13/2025
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