Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6141513 | Toner cartridge, process cartridge, and electrophotographic image forming apparatus | Tsutomu Nishiuwatoko, Hiroo Kobayashi, Shinichi Sasaki | 2000-10-31 |
| 6070028 | Process cartridge, electrophotographic image forming apparatus and coupling therebetween | Shinichi Sasaki, Isao Ikemoto, Kazushi Watanabe, Toshiyuki Karakama | 2000-05-30 |
| 6058278 | Toner container, process cartridge and electrophotographic image forming apparatus | Tadayuki Tsuda, Atsushi Kubota, Norio Hikake, Shinichi Sasaki, Isao Ikemoto | 2000-05-02 |
| 5966566 | Recycle method for process cartridge and image forming apparatus | Hiroo Kobayashi, Isao Ikemoto, Masahiko Yashiro, Toshiyuki Karakama, Atsushi Numagami +2 more | 1999-10-12 |
| 5870654 | Process cartridge remanufacturing method and process cartridge | Minoru Sato, Hiroo Kobayashi, Shinichi Sasaki, Satoshi Kurihara | 1999-02-09 |
| 5768660 | Charging device and process cartridge | Satoshi Kurihara, Kazumi Sekine, Shinichi Sasaki, Isao Ikemoto, Toshiyuki Karakama +1 more | 1998-06-16 |
| 5761584 | Process cartridge toner supply container mountable onto toner accommodating container and toner supply method | Tadayuki Tsuda, Atsushi Kubota, Shinichi Sasaki, Isao Ikemoto, Kazunori Kobayashi | 1998-06-02 |
| 5682587 | Developing apparatus using hollow magnet roller | Akira Higeta, Tadayuki Tsuda, Shinichi Sasaki, Isao Ikemoto | 1997-10-28 |
| 5585902 | Toner cartridge, process cartridge and electrophotographic image forming apparatus | Tsutomu Nishiuwatoko, Hiroo Kobayashi, Shinichi Sasaki | 1996-12-17 |
| 5550617 | Process cartridge and image forming apparatus | Shinichi Sasaki | 1996-08-27 |
| 5485249 | Process cartridge frame, process cartridge and image forming apparatus | Akira Higeta, Shinichi Sasaki | 1996-01-16 |
| 5175563 | Image recording apparatus and ink sheet cassette usable in the image recording apparatus | Hideo Fushimoto, Noboru Shimoyama, Osamu Asakura, Yoshio Uchikata, Kenji Kawazoe +8 more | 1992-12-29 |
| 4801272 | External pack connector | Manabu Kanazawa | 1989-01-31 |
| 4709128 | Easily positionable keyboard | — | 1987-11-24 |
| D289903 | Desk-top electronic calculator | Nobuo Kikuchi | 1987-05-19 |
| D286056 | Desk-top electronic calculator | Nobuo Kikuchi | 1986-10-07 |
| D282376 | Desk-top electronic calculator | Nobuo Kikuchi | 1986-01-28 |
| 4541582 | Rolled paper holder | — | 1985-09-17 |
| D276625 | Desk-top electronic calculator | Nobuo Kikuchi | 1984-12-04 |
| D263968 | Desk-top electronic calculator | Takashi Hirata | 1982-04-20 |
| D259349 | Desk top electronic calculator | Takashi Hirata | 1981-05-26 |
| D255245 | Desk top electronic calculator | Eiichi Yoshioka | 1980-06-03 |