GY

Goichi Yamakawa

KC Konishiroku Photo Industry Co.: 9 patents #85 of 894Top 10%
JR Japan Synthetic Rubber: 1 patents #256 of 558Top 50%
SC Sekisui Chemical Co.: 1 patents #529 of 908Top 60%
Overall (All Time): #592,735 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
4968574 Toner for electrophotography Hideaki Morita, Takahira Kasuya, Makoto Tomono, Hirozo Funaki, Minoru Kohara 1990-11-06
4657837 Toner for developing an electrostatically charged image Hideaki Morita, Takahira Kasuya, Makoto Tomono, Shinichiro Yasuda 1987-04-14
4623604 Triboelectric stabilized toner for developing electrically charged images and a method for the production thereof Hiroyuki Takagiwa, Kenzi Thuzita, Makoto Tomono, Saburo Wakimoto, Sadayasu Miyahara +3 more 1986-11-18
4572885 Developer composition for developing an electrostatic image Keiji Sato, Takahira Kasuya, Tsuneo Wada 1986-02-25
4564573 Electrostatic image forming toner Hideaki Morita, Takahira Kasuya, Makoto Tomono, Isao Furuta, Minoru Tsuneyoshi 1986-01-14
4518674 Developing material for electrophotography, process for preparation Shotaro Watanabe, Makoto Tomono, Takeo Nishimura, Nobuo Takahashi 1985-05-21
4514487 Method for manufacturing toner for electrophotography Takahira Kasuya, Hideaki Morita, Hiroyuki Takagiwa 1985-04-30
4473628 Toner for developing of electrostatic latent image Takahira Kasuya, Hideaki Morita, Makoto Tomono, Isao Furuta, Minoru Tsuneyoshi 1984-09-25
4287283 Iron powder developing carrier and the manufacturing method of the same, developer containing said carrier and method of forming visible image by using said developer Shotaro Watanabe, Makoto Tomono, Takeo Nishimura, Nobuo Takahashi 1981-09-01