Growing community of inventors

Shizuoka, Japan

Eiji Matsuyama

Average Co-Inventor Count = 3.46

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 = 447

Eiji Matsuyama ↔ Shotaro Kamo (3 patents)Eiji Matsuyama ↔ Mitsuhiro Masuda (2 patents)Eiji Matsuyama ↔ Isao Fushimi (1 patent)Eiji Matsuyama ↔ Hajime Kitamura (1 patent)Eiji Matsuyama ↔ Masayoshi Sugiyama (1 patent)Eiji MatsuyamaEiji Matsuyama (3 patents)Shotaro KamoShotaro Kamo (7 patents)Mitsuhiro MasudaMitsuhiro Masuda (12 patents)Isao FushimiIsao Fushimi (18 patents)Hajime KitamuraHajime Kitamura (10 patents)Masayoshi SugiyamaMasayoshi Sugiyama (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Star Micronics Company Limited (3 from 251 patents)


3 patents:

1. D598894 - Earphone

2. 7551748 - Earphone

3. D567217 - Earphone

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idiyas.com
as of
12/19/2025
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