Issued Patents All Time
Showing 51–75 of 87 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8805214 | Image forming apparatus | Masanari Fujita, Kenji Nakamura, Yoshiyuki Shimizu, Masato Tsuji, Shoh Tsuritani | 2014-08-12 |
| 8792808 | Developer container, developing device, process unit, and image forming apparatus | Naoki Nakatake, Yoshiyuki Shimizu, Shoh Tsuritani, Manabu Hamada, Masato Tsuji +1 more | 2014-07-29 |
| 8774683 | Development device, developer container, and image forming apparatus | Naoki Nakatake, Yoshiyuki Shimizu, Shoh Tsuritani | 2014-07-08 |
| 8768203 | Image forming apparatus capable of effectively utilizing interior space | Manabu Hamada, Tomofumi Yoshida, Hirobumi Ooyoshi, Yoshiyuki Shimizu, Takeru Muramatsu +6 more | 2014-07-01 |
| 8744321 | Developer container, developing device, process unit, and image forming apparatus | Naoki Nakatake, Yoshiyuki Shimizu, Shoh Tsuritani, Manabu Hamada, Masato Tsuji +1 more | 2014-06-03 |
| 8706010 | Image forming apparatus using a toner container in which the toner outlet may be positioned in a horizontal or vertical direction | Atsushi Takehara, Naoki Nakatake, Sho Tsuritani | 2014-04-22 |
| D698387 | Powder container | Sho Tsuritani, Yoshiyuki Shimizu, Emi Kita, Manabu Hamada, Masato Tsuji +1 more | 2014-01-28 |
| 8594519 | Image forming apparatus and toner supply method | Naoki Nakatake, Atsushi Takehara, Tetsumaru Fujita, Kohta Sakaya | 2013-11-26 |
| 8571426 | Toner supply method, development device, process unit, and image forming apparatus | Naoki Nakatake, Atsushi Takehara, Tomofumi Yoshida, Sho Tsuritani | 2013-10-29 |
| 8503892 | Developing unit, image forming apparatus, and process cartridge | Kohta Sakaya, Tetsumaru Fujita, Atsushi Takehara, Naoki Nakatake | 2013-08-06 |
| 8483583 | Image forming apparatus and toner supply method | Atsushi Takehara, Naoki Nakatake, Tetsumaru Fujita, Kohta Sakaya | 2013-07-09 |
| 8442414 | Seal member, developing device, process cartridge, and image forming apparatus | Kenzo Tatsumi, Tomofumi Yoshida, Hirobumi Ooyoshi, Yoshihiro Kawakami, Yoshiyuki Shimizu | 2013-05-14 |
| 8275285 | Process cartridge and image forming apparatus | Yoshihiro Kawakami, Koji Kato, Hirobumi Ooyoshi, Tomofumi Yoshida, Kenzo Tatsumi +1 more | 2012-09-25 |
| 8260186 | Toner cartridge with refillable fresh and residual toner chambers, process cartridge, and method of making toner cartridge reusable | Tomofumi Yoshida, Kenzo Tatsumi, Hirobumi Ooyoshi, Yoshiyuki Shimizu, Yoshihiro Kawakami +2 more | 2012-09-04 |
| 8208832 | Toner-collecting device and image forming apparatus | Tomofumi Yoshida, Hirobumi Ooyoshi, Kenzo Tatsumi, Yoshihiro Kawakami, Yoshiyuki Shimizu +1 more | 2012-06-26 |
| 8160476 | Latent image carrier having pairs of first and second positioning protrusions and image forming apparatus | Yoshiyuki Shimizu, Kenzo Tatsumi, Yoshihiro Kawakami, Koji Kato, Hirobumi Ooyoshi +1 more | 2012-04-17 |
| 8135313 | Powder transport screw, and development device, process unit and image-forming apparatus comprising this powder transport screw | Tomofumi Yoshida, Hirobumi Ooyoshi, Kenzo Tatsumi, Yoshiyuki Shimizu, Yoshihiro Kawakami +2 more | 2012-03-13 |
| 8135329 | Toner conveyer device, process cartridge, and image forming apparatus | Yoshiyuki Shimizu, Tomofumi Yoshida, Hirobumi Ooyoshi, Koji Kato, Kenzo Tatsumi +1 more | 2012-03-13 |
| 8103195 | Toner agitating unit, toner hopper, process cartridge, and image forming apparatus | Tomofumi Yoshida, Hirobumi Ooyoshi, Kenzo Tatsumi, Yoshihiro Kawakami, Yoshiyuki Shimizu +1 more | 2012-01-24 |
| 8095035 | Developing device, process unit, and image forming apparatus, with supporting members, grooves, and supported developing roller | Hirobumi Ooyoshi, Osamu Saito, Yoshihiro Kawakami, Kenzo Tatsumi, Yoshiyuki Shimizu +1 more | 2012-01-10 |
| 8081897 | Seal member, developing device, process cartridge, and image forming apparatus | Kenzo Tatsumi, Tomofumi Yoshida, Hirobumi Ooyoshi, Yoshihiro Kawakami, Yoshiyuki Shimizu | 2011-12-20 |
| 8019254 | Toner conveying device, process cartridge, and image forming apparatus | Kenzo Tatsumi, Koji Kato, Hirobumi Ooyoshi, Tomofumi Yoshida, Yoshihiro Kawakami +1 more | 2011-09-13 |
| 7979013 | Developing device of image forming apparatus | Tomofumi Yoshida, Hirobumi Ooyoshi, Kenzo Tatsumi, Yoshihiro Kawakami, Yoshiyuki Shimizu | 2011-07-12 |
| 7965958 | Developing device, process cartridge and image forming apparatus | Kenzo Tatsumi, Yoshihiro Kawakami, Yoshiyuki Shimizu, Hirobumi Ooyoshi, Tomofumi Yoshida +1 more | 2011-06-21 |
| 7965957 | Developing device and image forming apparatus that uses this developing device | Kenzo Tatsumi, Yoshihiro Kawakami, Yoshiyuki Shimizu, Hirobumi Ooyoshi, Tomofumi Yoshida +1 more | 2011-06-21 |