Growing community of inventors

Tokyo, Japan

Tsutomu Ishii

Average Co-Inventor Count = 2.29

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 = 116

Tsutomu IshiiKenji Inoue (1 patent)Tsutomu IshiiRyo Sakai (90 patents)Tsutomu IshiiHiroyuki Tanaka (1 patent)Tsutomu IshiiAtsushi Ishino (1 patent)Tsutomu IshiiKoji Demizu (1 patent)Tsutomu IshiiMichinori Hashimoto (1 patent)Tsutomu IshiiYumi Ito (7 patents)Tsutomu IshiiMasatoshi Kono (1 patent)Tsutomu IshiiShozo Ichimura (1 patent)Tsutomu IshiiSeiichi Takizawa (1 patent)Tsutomu IshiiTetsuo Shimamura (1 patent)Tsutomu IshiiFumio Karibe (1 patent)Tsutomu IshiiTsutomu Ishii (4 patents)Kenji InoueKenji Inoue (93 patents)Ryo SakaiRyo Sakai (90 patents)Hiroyuki TanakaHiroyuki Tanaka (89 patents)Atsushi IshinoAtsushi Ishino (11 patents)Koji DemizuKoji Demizu (8 patents)Michinori HashimotoMichinori Hashimoto (7 patents)Yumi ItoYumi Ito (7 patents)Masatoshi KonoMasatoshi Kono (3 patents)Shozo IchimuraShozo Ichimura (3 patents)Seiichi TakizawaSeiichi Takizawa (2 patents)Tetsuo ShimamuraTetsuo Shimamura (1 patent)Fumio KaribeFumio Karibe (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ichikawa Co., Ltd. (2 from 97 patents)

2. Fujitsu Corporation (1 from 39,230 patents)

3. Unitika Ltd. (1 from 390 patents)

4. Nippon Chemical Industrial Co., Ltd. (1 from 163 patents)

5. Kondoh Industries, Ltd. (1 from 6 patents)

6. Cambridge Filter Japan, Ltd. (1 from 5 patents)

7. Kabushiki Kaisha Toshiba (52,722 patents)

8. Toshiba Materials Co., Ltd. (265 patents)


4 patents:

1. 6325897 - Shoe press belt with chemically bonded inner oil layer

2. 6296738 - Shoe press belt

3. D419277 - Cashless automatic teller machine

4. 5830414 - Air cleaning filter

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as of
12/12/2025
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