Issued Patents All Time
Showing 51–75 of 100 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6118961 | Detachable two-frame process cartridge for an image forming apparatus | Yoshiya Nomura, Tadayuki Tsuda, Isao Ikemoto, Kazushi Watanabe, Hiroyuki Shirai +1 more | 2000-09-12 |
| 6070028 | Process cartridge, electrophotographic image forming apparatus and coupling therebetween | Kazuyoshi Odagawa, Isao Ikemoto, Kazushi Watanabe, Toshiyuki Karakama | 2000-05-30 |
| 6058278 | Toner container, process cartridge and electrophotographic image forming apparatus | Tadayuki Tsuda, Kazuyoshi Odagawa, Atsushi Kubota, Norio Hikake, Isao Ikemoto | 2000-05-02 |
| 6009289 | Process cartridge, developer container, waste developer container, method for assembling process cartridge, method for replenishing developer in process cartridge | Kazumi Sekine | 1999-12-28 |
| 6006058 | Process cartridge and electrophotographic image forming apparatus having an improved driving system | Kazushi Watanabe, Tadayuki Tsuda, Isao Ikemoto, Atsushi Numagami, Katsunori Yokoyama | 1999-12-21 |
| 5987278 | Process cartridge and image forming apparatus usable therewith | Yoshiya Nomura, Tadayuki Tsuda, Isao Ikemoto, Kazushi Watanabe, Hiroyuki Shirai +1 more | 1999-11-16 |
| 5937237 | Seal member, toner container and process cartridge | Fumito Nonaka, Isao Ikemoto, Yoshiyuki Batori | 1999-08-10 |
| 5923918 | Device for notifying a remaining amount of a developer, a process cartridge, and an electrophotographic image forming apparatus | Takao Nakagawa, Tadayuki Tsuda | 1999-07-13 |
| 5907749 | Process cartridge and image forming apparatus usable therewith | Yoshiya Nomura, Tadayuki Tsuda, Isao Ikemoto, Kazushi Watanabe, Hiroyuki Shirai +1 more | 1999-05-25 |
| 5870654 | Process cartridge remanufacturing method and process cartridge | Minoru Sato, Kazuyoshi Odagawa, Hiroo Kobayashi, Satoshi Kurihara | 1999-02-09 |
| 5864731 | Process cartridge, development apparatus, and electrophotographic image formation apparatus with plural toner feeding members | Isao Ikemoto | 1999-01-26 |
| 5832343 | Toner supply method, toner accommodation container, process cartridge and electrophotographic image forming apparatus | Kazunori Kobayashi, Tadayuki Tsuda, Isao Ikemoto, Toshiaki Nagashima, Hiroomi Matsuzaki +1 more | 1998-11-03 |
| 5828928 | Process cartridge mountable in an image forming system and a method for assembling a cleaning device | Yoshikazu Sasago, Kazumi Sekine, Tadayuki Tsuda, Isao Ikemoto, Kazushi Watanabe +10 more | 1998-10-27 |
| 5812909 | Developing device | Toru Oguma, Tadayuki Tsuda, Toshiyuki Karakama | 1998-09-22 |
| 5768660 | Charging device and process cartridge | Satoshi Kurihara, Kazuyoshi Odagawa, Kazumi Sekine, 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, Kazuyoshi Odagawa, Atsushi Kubota, Isao Ikemoto, Kazunori Kobayashi | 1998-06-02 |
| 5708925 | Developing agent supply container, process cartridge, and electrophotographic image forming apparatus | Kazunori Kobayashi, Kazumi Sekine, Isao Ikemoto | 1998-01-13 |
| 5701562 | Developing sleeve having a cylindrical portion and a non-cylindrical portion provided by the same member, and developing device using the sleeve | Ryuji Araki, Atsushi Kubota, Koji Miura | 1997-12-23 |
| 5689774 | Process cartridge and image forming apparatus using such a process cartridge | Kazuo Shishido, Isao Ikemoto, Masahiko Yashiro, Toshiyuki Karakama, Atsushi Numagami | 1997-11-18 |
| 5682579 | Detachable two-frame process cartridge for an image forming apparatus | Yoshiya Nomura, Tadayuki Tsuda, Isao Ikemoto, Kazushi Watanabe, Hiroyuki Shirai +1 more | 1997-10-28 |
| 5682587 | Developing apparatus using hollow magnet roller | Akira Higeta, Kazuyoshi Odagawa, Tadayuki Tsuda, Isao Ikemoto | 1997-10-28 |
| 5640650 | Process cartridge including a spaced rolling members support feature and image forming apparatus using the same | Kazushi Watanabe, Isao Ikemoto, Shigeo Miyabe, Shinya Noda | 1997-06-17 |
| 5623328 | Process cartridge and image forming system on which process cartridge is mountable | Tadayuki Tsuda, Kazumi Sekine, Isao Ikemoto, Kazushi Watanabe, Yoshikazu Sasago +9 more | 1997-04-22 |
| 5617579 | Process cartridge, method for assembling process cartridge and image forming apparatus | Masahiko Yashiro, Isao Ikemoto, Koji Miura, Toshiyuki Karakama, Atsushi Numagami | 1997-04-01 |
| 5594531 | Electrophotographic apparatus employing cylindrical member having space controlling member and press-fitted flange | Kazuo Shishido, Koji Miura | 1997-01-14 |