Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10199134 | Electrically conductive rubber composition, and developing roller | Takashi Marui | 2019-02-05 |
| 9639025 | Semiconductive roller | Takashi Marui, Kei Tajima | 2017-05-02 |
| 9465315 | Semiconductive roller | Takashi Marui, Kenichi Kuroda, Akihiko Kawatani | 2016-10-11 |
| 9454110 | Transfer member | Naoyuki SATOYOSHI, Kiyotaka Okuda, Masafumi Yamamoto | 2016-09-27 |
| 9443637 | Semiconductive roller | Takashi Marui, Kenichi Kuroda | 2016-09-13 |
| 9075340 | Developing roller | Kenichi Kuroda, Akihiko Kawatani | 2015-07-07 |
| 9064617 | Electrically conductive rubber composition, developing roller, and image forming apparatus | Takashi Marui, Kei Tajima | 2015-06-23 |
| 9011306 | Semiconductive roller | Takashi Marui | 2015-04-21 |
| 8744324 | Semiconductive roller, toner transport roller and electrophotographic apparatus | Akihiko Kawatani, Takashi Marui, Kenichi Kuroda | 2014-06-03 |
| 8670700 | Developing roller for electrophotographic image forming | Kenichi Kuroda, Akihiko Kawatani, Masakazu Tanaka | 2014-03-11 |
| 8396402 | Conductive roller | — | 2013-03-12 |
| 8277692 | Semiconductive rubber composition and semiconductive rubber roller employing the same | Takashi Marui, Kei Tajima, Noriaki Hitomi | 2012-10-02 |
| 8023869 | Conductive roller which is mounted on an image-forming mechanism of an electrophotographic apparatus | Masakazu Tanaka, Takashi Marui, Hideyuki Okuyama, Noriaki Hitomi | 2011-09-20 |
| 7869749 | Semiconductive rubber roller | Noriaki Hitomi, Hirotoshi Murakami, Yajun Zhang | 2011-01-11 |
| 7641816 | Semiconductor rubber composition and semiconductive rubber roller | — | 2010-01-05 |
| 7603067 | Rubber member and developing roller composed of rubber member | — | 2009-10-13 |
| 7555253 | Semiconductive rubber member and developing roller composed of semiconductive rubber member | — | 2009-06-30 |
| 7406277 | Semiconductive rubber member | — | 2008-07-29 |
| 7356293 | Toner transport roller | — | 2008-04-08 |
| 7220796 | Conductive elastomer composition, conductive member using conductive elastomer composition, image-forming apparatus having conductive member | Takayuki Hattori, Tetsuo Mizoguchi | 2007-05-22 |
| 7149466 | Conductive rubber member | — | 2006-12-12 |
| 7098264 | Conductive elastomer composition, conductive member using conductive elastomer composition, image-forming apparatus having conductive member | Takayuki Hattori, Tetsuo Mizoguchi | 2006-08-29 |
| 7070552 | Electroconductive rubber roller | — | 2006-07-04 |
| 6602957 | Thermoplastic elastomer composition and rubber roller composed thereof | Takayuki Hattori, Tetsuo Mizoguchi, Hideyuki Okuyama | 2003-08-05 |
| 6476140 | Thermoplastic elastomer composition and rubber roller composed thereof | Takayuki Hattori, Tetsuo Mizoguchi, Hideyuki Okuyama | 2002-11-05 |