Growing community of inventors

Kanagawa, Japan

Shigeyasu Tsuna

Average Co-Inventor Count = 5.83

ph-index = 2

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 = 12

Shigeyasu Tsuna ↔ Ryutaro Ichimura (2 patents)Shigeyasu Tsuna ↔ Takeshi Fujikawa (2 patents)Shigeyasu Tsuna ↔ Kaito Yamaguchi (2 patents)Shigeyasu Tsuna ↔ Toshinao Yoshihara (1 patent)Shigeyasu Tsuna ↔ Seiji Kato (1 patent)Shigeyasu TsunaShigeyasu Tsuna (2 patents)Ryutaro IchimuraRyutaro Ichimura (8 patents)Takeshi FujikawaTakeshi Fujikawa (4 patents)Kaito YamaguchiKaito Yamaguchi (2 patents)Toshinao YoshiharaToshinao Yoshihara (2 patents)Seiji KatoSeiji Kato (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kabushiki Kaisha Square Enix (2 from 270 patents)


2 patents:

1. D618285 - Arcade game machine

2. D618284 - Arcade game machine

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idiyas.com
as of
1/3/2026
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