Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8565648 | Charge element, process cartridge, and image forming apparatus | Tadayuki Oshima | 2013-10-22 |
| 8385780 | Charging member, charging device including the charging member, process cartridge including the charging device and image forming apparatus including the process cartridge | Makoto Nakamura, Yutaka Narita, Tadayuki Oshima, Taisuke Tokuwakt | 2013-02-26 |
| 8150295 | Charging member, charging device including the charging member, process cartridge including the charging device and image forming apparatus including the process cartridge | Makoto Nakamura, Yutaka Narita, Tadayuki Oshima, Taisuke Tokuwaki | 2012-04-03 |
| 8133161 | Conductive member, process cartridge, and image forming apparatus | Tadayuki Oshima, Taisuke Tokuwaki, Toshio Kojima, Tadaaki Hattori, Yutaka Narita +1 more | 2012-03-13 |
| 8105672 | Electroconductive member, process cartridge, and image forming apparatus | Makoto Nakamura, Toshio Kojima, Yutaka Narita, Tadaaki Hattori, Taisuke Tokuwaki +1 more | 2012-01-31 |
| 8038590 | Conductive member, process cartridge having the same, and image forming apparatus having the process cartridge | Yutaka Narita, Makoto Nakamura, Akiko Tanaka, Taisuke Tokuwaki, Tadayuki Oshima | 2011-10-18 |
| 8041259 | Conductive member, process cartridge including same, and image forming apparatus including the process cartridge | Yutaka Narita, Makoto Nakamura, Taisuke Tokuwaki, Tadaaki Hattori, Tadayuki Oshima | 2011-10-18 |
| 8032050 | Charge assembly and image formation apparatus including the same | Makoto Nakamura, Yutaka Narita, Tadayuki Oshima, Taisuke Tokuwaki | 2011-10-04 |
| 7941077 | Conductive member, process cartridge using conductive member, and image forming apparatus using process cartridge | Tadayuki Oshima, Taisuke Tokuwaki, Yutaka Narita, Makoto Nakamura | 2011-05-10 |
| 7734221 | Conductive member, process cartridge using conductive member and image formation apparatus using process cartridge | Tadayuki Oshima, Taisuke Tokuwaki, Tadaaki Hattori, Toshio Kojima, Makoto Nakamura +1 more | 2010-06-08 |
| 7693456 | Conductive member and process cartridge having it and image forming apparatus having the process cartridge | Yutaka Narita, Makoto Nakamura, Akiko Tanaka, Taisuke Tokuwaki, Tadayuki Oshima | 2010-04-06 |
| 7693455 | Conductive member, process cartridge having conductive member, and image forming apparatus having process cartridge | Taisuke Tokuwaki, Yutaka Narita, Toshio Kojima, Tadaaki Hattori, Makoto Nakamura +1 more | 2010-04-06 |
| 7515852 | Conductive member, charging member using the conductive member, process cartridge using the charging member and image forming apparatus using process cartridge | Makoto Nakamura, Yutaka Narita, Tadayuki Oshima, Tadaaki Hattori, Toshio Kojima +1 more | 2009-04-07 |
| 7493064 | Electric conductive member, process cartridge and image forming apparatus | Yutaka Narita, Makoto Nakamura, Toshio Kojima, Tadaaki Hattori, Taisuke Tokuwaki +1 more | 2009-02-17 |