Issued Patents All Time
Showing 25 most recent of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10409208 | Image forming apparatus for forming image on sheet | Sueaki Okamoto, Koji Kuramashi | 2019-09-10 |
| 10281840 | Image forming apparatus that executes cleaning operation on fixing section | Sueaki Okamoto, Koji Kuramashi | 2019-05-07 |
| 10281837 | Developing device and image forming apparatus therewith | Masaki Hayashi, Koji Kuramashi | 2019-05-07 |
| 10156822 | Image forming apparatus that forms image on sheet | Koji Kuramashi, Sueaki Okamoto | 2018-12-18 |
| 9400453 | Developing device and image forming apparatus therewith, and developer carrying member therein | — | 2016-07-26 |
| 9274456 | Developing device comprising a conveying member having a hollow spiral shape and image forming apparatus provided with the same | Yoshihiro Yamagishi, Hiroshi Yamazaki, Masaki Hayashi, Koji Kuramashi | 2016-03-01 |
| 9176429 | Developing device and image forming apparatus provided with same | Yoshihiro Yamagishi, Hiroshi Yamazaki, Masaki Hayashi, Koji Kuramashi | 2015-11-03 |
| 9158233 | Conveyance device, development device including conveyance device, and image forming apparatus including development device | Hiroshi Yamazaki, Kuniaki Nakano, Koji Kuramashi, Yoshihiro Yamagishi | 2015-10-13 |
| 9152085 | Developing device and image forming apparatus including the same | Masaki Hayashi, Yoshihiro Yamagishi, Hiroshi Yamazaki, Koji Kuramashi | 2015-10-06 |
| 9104136 | Developer conveyance device, development device, and image forming apparatus | Kuniaki Nakano, Koji Kuramashi, Hiroshi Yamazaki, Yoshihiro Yamagishi | 2015-08-11 |
| 9008553 | Developer conveying device, and developing device and image forming apparatus provided with same | Kuniaki Nakano, Koji Kuramashi, Hiroshi Yamazaki, Yoshihiro Yamagishi | 2015-04-14 |
| 8989634 | Developer case that suppresses clogging due to developer, developer replenishment unit having the same, and image forming apparatus having the same | Kenichi Tamaki, Takahisa Nakaue, Tamotsu Shimizu, Ikuo Makie, Koji Kuramashi +2 more | 2015-03-24 |
| 8913925 | Developer conveying device including a plurality of planar portions and a developing device and image forming apparatus provided with same | Koji Kuramashi, Yoshihiro Yamagishi, Hiroshi Yamazaki, Kuniaki Nakano | 2014-12-16 |
| 8666292 | Developer case and image forming apparatus to which developer case is applied | Tamotsu Shimizu, Takahisa Nakaue, Teruhiko Nagashima, Takashi Morita, Yoshihiro Yamagishi +4 more | 2014-03-04 |
| 8532539 | Image forming apparatus | Hideya Muramoto, Hirohisa Endou, Ikuo Makie, Masaki Hayashi, Yoshihiro Yamagishi | 2013-09-10 |
| 8406661 | Developing device and image forming apparatus provided therewith | Yoshihiro Yamagishi, Takahisa Nakaue, Ikuo Makie, Masaki Hayashi, Koji Kuramashi +1 more | 2013-03-26 |
| 7680428 | Grid wire cleaning mechanism | Shingo Sakato, Hirohisa Endou, Toyotsune Inoue | 2010-03-16 |
| 7647001 | Developing device and image forming device equipped with same | Asami Kotera | 2010-01-12 |
| 7630656 | Image forming apparatus | Hirohisa Endou, Shingo Sakato, Toyotsune Inoue | 2009-12-08 |
| 7555247 | Toner conveying device, developing device, and image forming device having the same | Koji Suenami, Hiroyuki Hamakawa, Takaaki Kamei, Asami Kotera, Yoshihiro Yamagishi +1 more | 2009-06-30 |
| 7542696 | Developing device and image forming device equipped with same | Asami Kotera | 2009-06-02 |
| 7421233 | Developing device and image forming apparatus | Yoshihiro Yamagishi, Takaaki Kamei, Asami Kotera, Koji Suenami | 2008-09-02 |
| 7421226 | Developing device and image forming apparatus | Koji Suenami, Hirohisa Endou, Hiroyuki Hamakawa, Yoshihiro Yamagishi | 2008-09-02 |
| 6778796 | Driving mechanism for use in image forming apparatus | Masanobu Maeshima, Naoki Yamane, Masahiro Tsutsumi, Nariaki Tanaka, Akira Matayoshi +1 more | 2004-08-17 |
| 5850585 | Destaticizer and image forming apparatus employing the same | Masahiro Tsutsumi, Kazuhisa Edahiro, Yuichiro Hisakawa, Hidekazu Shono | 1998-12-15 |