SI

Seijiro Ishimaru

FI Fujifilm Business Innovation: 12 patents #796 of 5,238Top 20%
MC Mita Industrial Co.: 9 patents #140 of 891Top 20%
Fujitsu Limited: 2 patents #10,930 of 24,456Top 45%
PC Powdertech Co.: 1 patents #38 of 66Top 60%
Overall (All Time): #184,156 of 4,157,543Top 5%
23
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
10488772 Electrostatic-image developing toner, electrostatic image developer, and toner cartridge Shinichi Yaoi, Asafumi FUJITA, Yasushige Nakamura 2019-11-26
10353310 Electrostatic-image developing toner, electrostatic image developer, and toner cartridge Asafumi FUJITA, Shinichi Yaoi, Yasushige Nakamura 2019-07-16
9915886 Image forming apparatus, electrostatic charge image developer, and electrostatic charge image developing toner Asafumi FUJITA, Shinichi Yaoi, Yasushige Nakamura 2018-03-13
9874827 Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge Yasushige Nakamura, Shinichi Yaoi, Asafumi FUJITA 2018-01-23
8383308 Positively chargeable two-component developer, image forming method, and image forming apparatus Sakon Takahashi, Daisuke Ishizuka, Michio Take, Chiaki Suzuki 2013-02-26
7252914 Toner for electrophotography and developer for electrophotography using the same, process cartridge, apparatus for forming image, and method for forming image Yasushige Nakamura, Tomoaki Tanaka, Sadaaki Yoshida, Yoshimichi Katagiri 2007-08-07
6967070 Electrophotographic toner and image forming method Yasushige Nakamura, Toru Takahashi, Tsuneo Watanuki, Norio Sawatari, Yasuyuki Furuse 2005-11-22
6833228 Toner and an image formation method Yasushige Nakamura, Mutsuo Watanabe, Yoshimichi Katagiri 2004-12-21
6821696 Toner for optical fixing, manufacturing method therefor and image formation apparatus using it Yoshimichi Katagiri, Yasushige Nakamura, Shinichi Yaoi, Tomoaki Tanaka, Satoshi Takezawa +4 more 2004-11-23
6803165 Toner for electrophotography, developing agent for electrophotography using the toner, image forming method, and image forming device Yasushige Nakamura 2004-10-12
6746808 Image forming color toner, color image forming method and color image forming apparatus Yasushige Nakamura, Shinichi Yaoi, Tomoaki Tanaka, Yoshimichi Katagiri, Satoshi Takezawa +1 more 2004-06-08
6727030 Toner and an image formation method Yasushige Nakamura, Mutsuo Watanabe, Yoshimichi Katagiri 2004-04-27
6544707 Two component developing agent and an image forming apparatus by use of the same Yasushige Nakamura, Yoshimichi Katagiri, Yuji Sato, Tsuyoshi Itagoshi, Hiromichi Kobayashi 2003-04-08
6468705 Optical fixing toner Yoshimichi Katagiri, Yasushige Nakamura, Shinichi Yaoi 2002-10-22
5750301 Toner for a two-component type developer Masatomi Funato, Yoshitake Shimizu, Norio Kubo, Kazuya Nagao, Terumichi Asano 1998-05-12
5580691 Toner for a two-component type developer Masatomi Funato, Yoshitake Shimizu, Norio Kubo, Kazuya Nagao, Terumichi Asano 1996-12-03
5521045 Toner for a two-component-type magnetic developing agent having excellent spent resistance Masatomi Funato, Yoshitake Shimizu, Kazuya Nagao 1996-05-28
5514509 Electrophotographic developer Hideaki Kawata, Nobuaki Kawano, Fumie Kimura 1996-05-07
5500319 Toner for a two-component-type magnetic developing agent having excellent spent resistance Masatomi Funato, Yoshitake Shimizu, Kazuya Nagao 1996-03-19
5376489 Two-component developer Naruo Yabe, Tetsuya Nakano, Masahide Inoue, Teruaki Teratani, Koichi Tsuyama +1 more 1994-12-27
5240804 Electrophotographic developer comprising resin coated carrier Tetsuya Nakano, Naruo Yabe, Masahide Inoue, Teruaki Teratani, Koichi Tsuyama +1 more 1993-08-31
5232807 Electrophotographic developer Tetsuya Nakano, Naruo Yabe, Masahide Inoue, Teruaki Teratani, Koichi Tsuyama +1 more 1993-08-03
5223367 Start developer Tetsuya Nakano, Masahide Inoue, Koichi Tsuyama, Teruaki Teratani, Naruo Yabe +1 more 1993-06-29