Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9741839 | Gate structure of thyristor | — | 2017-08-22 |
| 9303690 | Rolling bearing | Masashi Nishimura, Shinji Oishi | 2016-04-05 |
| 9273725 | Rolling bearing | Rino Fukami, Shinji Oishi, Makoto Nishikawa | 2016-03-01 |
| 8939865 | Roller bearing | Masashi Nishimura, Shinji Oishi | 2015-01-27 |
| 8041269 | Development apparatus having two developer bearers and two development chambers | Tatsuya Kubo, Yoshitaka Fujinuma, Takashi Suzuki, Susumu Tateyama, Masayoshi Nakayama | 2011-10-18 |
| 7792441 | Image formation apparatus | Shinichi Akatsu, Takashi Suzuki, Shigeru Tosa | 2010-09-07 |
| 7792466 | Image forming apparatus and developing device | Masayoshi Nakayama, Yoshitaka Fujinuma, Takashi Suzuki, Susumu Tateyama, Tatsuya Kubo | 2010-09-07 |
| 7689153 | Image forming system having charge balancing system | Koji Kato, Tomonari Hokkyo, Kenji Nozawa | 2010-03-30 |
| 7683150 | Water-absorbent polymer and process for producing the same | Naonori Higashimoto | 2010-03-23 |
| 7580657 | Developing device in image-forming device | Susumu Tateyama, Yoshitaka Fujinuma, Masayoshi Nakayama | 2009-08-25 |
| 7538791 | Color monitor white chromaticity measuring device | Tohru Sugiyama | 2009-05-26 |
| 7324778 | Fixing device including heating roller and pressure roller | Takashi Suzuki, Teruaki Mitsuya, Keisuke Kubota, Masato Miwa, Yoshitaka Fujinuma | 2008-01-29 |
| 5923933 | Electrophotographic apparatus | Masayasu Anzai, Tsuneaki Kawanishi, Yoshitaka Fujinuma, Hiroyoshi Matsumoto, Yasuo Takuma +7 more | 1999-07-13 |
| 5393995 | Semiconductor thyristor device with recess | Futoshi Tokunoh, Kouji Niinobu | 1995-02-28 |
| 5278640 | Color modification utilizing two coefficients | Masao Aizu, Mitsuhiro Hamashima, Shunsuke Mukasa, Takashi Uchiyama, Haruo Wakabayashi | 1994-01-11 |
| 5173189 | Membrane for separating an organic solvent from a water-organic solvent mixture | Masaru Hoshi, Akon Higuchi, Toshio Sugizaki | 1992-12-22 |
| 4975769 | Apparatus for color modification adapted to represent the pictorial image | Masao Aizu, Mitsuhiro Hamashima, Shunsuke Mukasa, Takashi Uchiyama, Haruo Wakabayashi | 1990-12-04 |
| 4948508 | Surface-hydrophilic, highly selective semipermeable membrane | Akon Higuchi | 1990-08-14 |
| 4881118 | Semiconductor device | Kazuhiko Niwayama, Futoshi Tokunoh, Shigekazu Yoshida | 1989-11-14 |
| 4639276 | Method of making thyristor with a high tolerable bias voltage | — | 1987-01-27 |
| 4586070 | Thyristor with abrupt anode emitter junction | — | 1986-04-29 |
| 4559551 | Semiconductor device | — | 1985-12-17 |
| 4420612 | Catalyst membrane | Seiichi Aiba, Kazuhisa Hiratani | 1983-12-13 |