Growing community of inventors

Tokyo, Japan

Tsuyoshi Sakai

Average Co-Inventor Count = 1.58

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 = 81

Tsuyoshi SakaiHiroki Nakamura (1 patent)Tsuyoshi SakaiYasuji Fukutomi (1 patent)Tsuyoshi SakaiKazuo Hirose (1 patent)Tsuyoshi SakaiTakafumi Shirai (1 patent)Tsuyoshi SakaiNaoaki Sugio (1 patent)Tsuyoshi SakaiYumeto Tsukada (1 patent)Tsuyoshi SakaiTsuyoshi Sakai (4 patents)Hiroki NakamuraHiroki Nakamura (245 patents)Yasuji FukutomiYasuji Fukutomi (7 patents)Kazuo HiroseKazuo Hirose (1 patent)Takafumi ShiraiTakafumi Shirai (1 patent)Naoaki SugioNaoaki Sugio (1 patent)Yumeto TsukadaYumeto Tsukada (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Doppel Co., Ltd. (2 from 13 patents)

2. Nec Corporation (1 from 35,756 patents)

3. Bandai Namco Amusement Inc. (1 from 1 patent)


4 patents:

1. D959557 - Amusement game machine

2. 10616371 - Information terminal, access system, information processing method, and program

3. 6322862 - Pressed flowers enclosed article

4. 6127458 - Artificial stone composition and method of manufacturing artificial stone

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as of
1/10/2026
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