Growing community of inventors

Tokyo, Japan

Ryuichi Ishikawa

Average Co-Inventor Count = 4.74

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 = 38

Ryuichi IshikawaHiroshi Iwata (4 patents)Ryuichi IshikawaHajime Okutsu (4 patents)Ryuichi IshikawaNobuyuki Yamamoto (3 patents)Ryuichi IshikawaTakayuki Kobayashi (3 patents)Ryuichi IshikawaKoichi Akiyama (3 patents)Ryuichi IshikawaKiyoshi Asai (2 patents)Ryuichi IshikawaTakahiro Ohshita (2 patents)Ryuichi IshikawaHiroshi Yoshida (1 patent)Ryuichi IshikawaTetsuhisa Hirose (1 patent)Ryuichi IshikawaYasushi Watanabe (1 patent)Ryuichi IshikawaYukihiro Nakamura (16 patents)Ryuichi IshikawaTadao Samejima (1 patent)Ryuichi IshikawaYukihiro Mizutori (1 patent)Ryuichi IshikawaTakahide Sato (6 patents)Ryuichi IshikawaMitsuyoshi Kaneko (1 patent)Ryuichi IshikawaShigeru Yamaguchi (4 patents)Ryuichi IshikawaHiroshi Saitoh (4 patents)Ryuichi IshikawaMasatoshi Kamata (1 patent)Ryuichi IshikawaChikao Goke (1 patent)Ryuichi IshikawaKohki Imamura (0 patent)Ryuichi IshikawaFutoshi Ikeda (0 patent)Ryuichi IshikawaMakoto Kira (0 patent)Ryuichi IshikawaKosuke Kikuchi (0 patent)Ryuichi IshikawaSumihiro Yoshikawa (0 patent)Ryuichi IshikawaMakoto Klra (0 patent)Ryuichi IshikawaRyuichi Ishikawa (7 patents)Hiroshi IwataHiroshi Iwata (33 patents)Hajime OkutsuHajime Okutsu (4 patents)Nobuyuki YamamotoNobuyuki Yamamoto (84 patents)Takayuki KobayashiTakayuki Kobayashi (83 patents)Koichi AkiyamaKoichi Akiyama (55 patents)Kiyoshi AsaiKiyoshi Asai (68 patents)Takahiro OhshitaTakahiro Ohshita (14 patents)Hiroshi YoshidaHiroshi Yoshida (42 patents)Tetsuhisa HiroseTetsuhisa Hirose (25 patents)Yasushi WatanabeYasushi Watanabe (24 patents)Yukihiro NakamuraYukihiro Nakamura (16 patents)Tadao SamejimaTadao Samejima (16 patents)Yukihiro MizutoriYukihiro Mizutori (10 patents)Takahide SatoTakahide Sato (6 patents)Mitsuyoshi KanekoMitsuyoshi Kaneko (4 patents)Shigeru YamaguchiShigeru Yamaguchi (4 patents)Hiroshi SaitohHiroshi Saitoh (4 patents)Masatoshi KamataMasatoshi Kamata (2 patents)Chikao GokeChikao Goke (2 patents)Kohki ImamuraKohki Imamura (0 patent)Futoshi IkedaFutoshi Ikeda (0 patent)Makoto KiraMakoto Kira (0 patent)Kosuke KikuchiKosuke Kikuchi (0 patent)Sumihiro YoshikawaSumihiro Yoshikawa (0 patent)Makoto KlraMakoto Klra (0 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Mitsubishi Chemical Corporation (4 from 2,348 patents)

2. Ebara Corporation (3 from 2,510 patents)

3. Ibiden Company Limited (1 from 1,481 patents)

4. Ebara Environmental Plant Co., Ltd. (6 patents)


7 patents:

1. 11951692 - Fiber-reinforced resin material, molded article, method and device for manufacturing fiber-reinforced resin material, and fiber bundle group inspection device

2. 11597165 - Fiber-reinforced resin material, molded article, method and device for manufacturing fiber-reinforced resin material, and fiber bundle group inspection device

3. 10927479 - Producing device and producing method for chopped fiber bundles, producing device and producing method for fiber-reinforced resin forming materials, cutting blade for carbon fiber bundles, and rotary cutter for carbon fiber bundles

4. 10343352 - Fiber-reinforced resin material, molded article, method and device for manufacturing fiber-reinforced resin material, and fiber bundle group inspection device

5. 5288299 - Exhaust gas treating apparatus

6. 5127345 - Combustion apparatus and combustion control method therefor

7. 5107757 - Apparatus for dewatering waste material by capillary action

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12/28/2025
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