Growing community of inventors

Tokyo, Japan

Koji Osuka

Average Co-Inventor Count = 1.87

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

Koji OsukaKoji Yamaguchi (2 patents)Koji OsukaShingo Kataoka (2 patents)Koji OsukaKeiji Yano (2 patents)Koji OsukaYuji Ikeda (2 patents)Koji OsukaSusumu Murata (2 patents)Koji OsukaYuji Nagao (2 patents)Koji OsukaYasuhiro Takagi (2 patents)Koji OsukaShunichi Nakamura (2 patents)Koji OsukaMuneoki Kamata (2 patents)Koji OsukaNaoki Kawajiri (2 patents)Koji OsukaTakanori Akiyama (2 patents)Koji OsukaMitsuru Todaiji (2 patents)Koji OsukaKoji Osuka (4 patents)Koji YamaguchiKoji Yamaguchi (122 patents)Shingo KataokaShingo Kataoka (62 patents)Keiji YanoKeiji Yano (16 patents)Yuji IkedaYuji Ikeda (12 patents)Susumu MurataSusumu Murata (12 patents)Yuji NagaoYuji Nagao (9 patents)Yasuhiro TakagiYasuhiro Takagi (8 patents)Shunichi NakamuraShunichi Nakamura (7 patents)Muneoki KamataMuneoki Kamata (4 patents)Naoki KawajiriNaoki Kawajiri (3 patents)Takanori AkiyamaTakanori Akiyama (3 patents)Mitsuru TodaijiMitsuru Todaiji (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sega Enterprises, Ltd. (2 from 264 patents)

2. Sega Corporation (1 from 134 patents)

3. Kabushiki Kaisha Sega (1 from 92 patents)


4 patents:

1. D623240 - Card game device

2. D561840 - Simulated game device

3. 7273414 - Race game device

4. 6394898 - Race game device

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as of
12/27/2025
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