Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D916958 | Image drum cartridge | Masashi Fujii, Junichi Ushikubo, Shun Hatanaka | 2021-04-20 |
| D910743 | Image drum cartridge | Masashi Fujii, Junichi Ushikubo, Shun Hatanaka | 2021-02-16 |
| D910742 | Image drum cartridge | Masashi Fujii, Junichi Ushikubo, Shun Hatanaka | 2021-02-16 |
| D898820 | Toner cartridge | Junichi Ushikubo, Masashi Fujii, Shun Hatanaka | 2020-10-13 |
| D898114 | Toner cartridge | Junichi Ushikubo, Masashi Fujii, Shun Hatanaka | 2020-10-06 |
| D892921 | Toner cartridge | Junichi Ushikubo, Masashi Fujii, Shun Hatanaka | 2020-08-11 |
| 10018949 | Image forming apparatus | Yoichi Hayakawa | 2018-07-10 |
| 9366986 | Development device and image formation apparatus | — | 2016-06-14 |
| 8918026 | Developer holding apparatus, developing unit that incorporates the developer holding apparatus, and image forming apparatus that employs the developer holding apparatus | — | 2014-12-23 |
| D674007 | Image drum cartridge | Junichi Ushikubo, Osamu Teramura | 2013-01-08 |
| D674004 | Toner cartridge | Osamu Teramura, Junichi Ushikubo | 2013-01-08 |
| D674005 | Toner cartridge | Osamu Teramura, Junichi Ushikubo | 2013-01-08 |
| 8208836 | Developer holding apparatus, developing apparatus, and image forming apparatus | — | 2012-06-26 |
| 8041265 | Image forming unit with movable member and image forming apparatus | — | 2011-10-18 |
| 7983602 | Image forming apparatus and toner cartridge | Atsushi Ota | 2011-07-19 |
| 7840160 | Toner cartridge with memory element, image drum unit with the toner cartridge, and image forming apparatus with the image drum unit | — | 2010-11-23 |
| 7801468 | Toner cartridge and mechanism for opening and closing a toner discharging opening | — | 2010-09-21 |
| 7689149 | Image forming apparatus and toner cartridge | Atsushi Ota | 2010-03-30 |
| 7437095 | Image forming apparatus and toner cartridge | Atsushi Ota | 2008-10-14 |
| 7218872 | Image forming apparatus | — | 2007-05-15 |
| 5674015 | Arrangement of actuators and tip ends in a wire dot print head | Tatsuya Koyama, Masahiro Hatano | 1997-10-07 |
| 5167458 | Wire driving mechanism | Hirokazu Andou, Masahiro Tatsukami, Jiro Tanuma, Hiroshi Kikuchi, Katsuya Kamimura +1 more | 1992-12-01 |
| 4962876 | Method of producing a movable part of a wire-dot print head | Hirokazu Andou, Hiroshi Kikuchi | 1990-10-16 |