Growing community of inventors

Fukuoka, Japan

Ryouichi Tsukada

Average Co-Inventor Count = 5.87

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 = 72

Ryouichi Tsukada ↔ Shinji Shibata (2 patents)Ryouichi Tsukada ↔ Osamu Tsutsui (1 patent)Ryouichi Tsukada ↔ Atsuo Makita (1 patent)Ryouichi Tsukada ↔ Ryosuke Hayashi (1 patent)Ryouichi Tsukada ↔ Kinya Arita (1 patent)Ryouichi Tsukada ↔ Takashi Yoshioka (1 patent)Ryouichi Tsukada ↔ Noboru Shinbara (1 patent)Ryouichi Tsukada ↔ Hiroyuki Matsushita (1 patent)Ryouichi Tsukada ↔ Yoshiki Ohta (1 patent)Ryouichi Tsukada ↔ Katsuichi Irifune (1 patent)Ryouichi Tsukada ↔ Takayuki Ootani (1 patent)Ryouichi Tsukada ↔ Nobuichiro Ohsato (1 patent)Ryouichi TsukadaRyouichi Tsukada (2 patents)Shinji ShibataShinji Shibata (18 patents)Osamu TsutsuiOsamu Tsutsui (21 patents)Atsuo MakitaAtsuo Makita (16 patents)Ryosuke HayashiRyosuke Hayashi (13 patents)Kinya AritaKinya Arita (10 patents)Takashi YoshiokaTakashi Yoshioka (9 patents)Noboru ShinbaraNoboru Shinbara (7 patents)Hiroyuki MatsushitaHiroyuki Matsushita (4 patents)Yoshiki OhtaYoshiki Ohta (2 patents)Katsuichi IrifuneKatsuichi Irifune (1 patent)Takayuki OotaniTakayuki Ootani (1 patent)Nobuichiro OhsatoNobuichiro Ohsato (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Toto Ltd. (2 from 1,192 patents)


2 patents:

1. 5918325 - Flush toilet bowl

2. 5502845 - Siphon-jet flush water supply system for toilet stool

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12/24/2025
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