Growing community of inventors

Nogata-gun, Japan

Hideo Ryuu

Average Co-Inventor Count = 1.20

ph-index = 3

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 = 29

Hideo RyuuKazumi Fukaya (1 patent)Hideo RyuuHideo Ryuu (3 patents)Kazumi FukayaKazumi Fukaya (10 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Usui Kokusai Sangyo Kaisha Limited (3 from 334 patents)


3 patents:

1. 5890749 - Connector for connecting pipe arrangements having small diameter

2. 5881857 - Hydraulic fan coupling apparatus

3. 5794749 - Temperature-responsive fluid-type fan coupling apparatus

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1/22/2026
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