Growing community of inventors

Tokyo, Japan

Rie Usui

Average Co-Inventor Count = 3.00

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

Rie UsuiTakao Kimura (1 patent)Rie UsuiKunio Shibasaki (1 patent)Rie UsuiKunio Shibasaki (1 patent)Rie UsuiRie Usui (1 patent)Takao KimuraTakao Kimura (2 patents)Kunio ShibasakiKunio Shibasaki (1 patent)Kunio ShibasakiKunio Shibasaki (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Mermaid Co., Ltd. (1 from 3 patents)

2. Kimura, Takao (0 patent)

3. Usui, Rie (0 patent)


1 patent:

1. 7703388 - Fryer

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as of
1/11/2026
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