Issued Patents All Time
Showing 51–75 of 84 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5617579 | Process cartridge, method for assembling process cartridge and image forming apparatus | Masahiko Yashiro, Shinichi Sasaki, Koji Miura, Toshiyuki Karakama, Atsushi Numagami | 1997-04-01 |
| 5608509 | Process cartridge with blade member having a flat-surface side and an angled-surface side | Hiroyuki Shirai, Kazumi Sekine, Tadayuki Tsuda, Kazushi Watanabe, Yoshikazu Sasago +4 more | 1997-03-04 |
| 5602623 | Photosensitive drum provided in an image forming apparatus including gears disposed at an end of drum | Atsushi Nishibata, Morikazu Mizutani, Kazumi Sekine, Tadayuki Tsuda, Kazushi Watanabe +4 more | 1997-02-11 |
| 5583613 | Image forming system | Kazunori Kobayashi, Kazumi Sekine, Tadayuki Tsuda, Kazushi Watanabe, Yoshikazu Sasago +1 more | 1996-12-10 |
| 5581325 | Process cartridge having an electroconductive grounding member and an image forming apparatus using such a process cartridge | Tadayuki Tsuda, Shinichi Sasaki | 1996-12-03 |
| 5561504 | Process cartridge, method for assembling same and image forming system with self-regulating liquid seal feature | Kazushi Watanabe, Tadayuki Tsuda | 1996-10-01 |
| 5543898 | Process cartridge, method for assembling process cartridge and image forming apparatus | Kazuo Shishido, Shinichi Sasaki, Masahiko Yashiro, Toshiyuki Karakama, Atsushi Numagami | 1996-08-06 |
| 5510878 | Process cartridge and image forming system | Shinya Noda, Kazumi Sekine, Tadayuki Tsuda, Kazushi Watanabe, Yoshikazu Sasago +2 more | 1996-04-23 |
| 5500714 | Process cartridge, method for assembling process cartridge and image forming appararatus | Masahiko Yashiro, Shinichi Sasaki, Koji Miura, Toshiyuki Karakama, Atsushi Numagami | 1996-03-19 |
| 5488459 | Image bearing member having an asymmetrically weighted base, process cartridge and image forming apparatus | Tadayuki Tsuda, Kazumi Sekine, Kazushi Watanabe, Yoshikazu Sasago, Yasushi Shimizu +2 more | 1996-01-30 |
| 5475470 | Process cartridge and image forming system on which the process cartridge is mountable using a handgrip | Yoshikazu Sasago, Kazumi Sekine, Tadayuki Tsuda, Kazushi Watanabe, Shinya Noda +1 more | 1995-12-12 |
| 5470635 | Blade member having a flat-surface side and an angled-surface side | Hiroyuki Shirai, Kazumi Sekine, Tadayuki Tsuda, Kazushi Watanabe, Yoshikazu Sasago +4 more | 1995-11-28 |
| 5463446 | Rotary member a process cartridge and an assembling method for rolling members | Kazushi Watanabe, Shinichi Sasaki, Shigeo Miyabe, Shinya Noda | 1995-10-31 |
| 5404198 | Process cartridge and image forming apparatus | Shinya Noda, Kazumi Sekine, Tadayuki Tsuda, Kazushi Watanabe, Yoshikazu Sasago +2 more | 1995-04-04 |
| 5345294 | Process cartridge and image forming apparatus using same | Yoshiya Nomura, Tadayuki Tsuda, Kazushi Watanabe, Kazuhiko Ishiwata, Makoto Tanaka +2 more | 1994-09-06 |
| 5331372 | Process cartridge and image forming apparatus on which process cartridge is mountable | Tadayuki Tsuda, Kazumi Sekine, Kazushi Watanabe, Yoshikazu Sasago, Shinya Noda +2 more | 1994-07-19 |
| 5294960 | Detachable two-frame process cartridge for an image forming apparatus | Yoshiya Nomura, Tadayuki Tsuda, Shinichi Sasaki, Kazushi Watanabe, Hiroyuki Shirai +1 more | 1994-03-15 |
| 5223893 | Process cartridge detachably mountable to image forming apparatus | Kazushi Watanabe, Tadayuki Tsuda, Shinichi Sasaki | 1993-06-29 |
| 5223938 | Image forming apparatus and process cartridge therefor | Morikazu Mizutani, Shigeyoshi Onoda, Shinji Kanemitsu, Hajime Kitajima | 1993-06-29 |
| 5208634 | Process cartridge detachably mountable to image forming apparatus featuring an injectable sealing member | Tadayuki Tsuda, Kazushi Watanabe, Kazuhiko Ishiwata, Kazuo Shishido, Kanji Yano +4 more | 1993-05-04 |
| 5151734 | Process cartridge detachably mountable to image forming apparatus featuring a peripherally supported image bearing drum | Tadayuki Tsuda, Kazushi Watanabe, Shinichi Sasaki | 1992-09-29 |
| 5138394 | Cleaning apparatus with means to effectively use toner storage space | Kazushi Watanabe, Tadayuki Tsuda, Kazuhiko Ishiwata, Makoto Tanaka | 1992-08-11 |
| 5113224 | Reciprocating driving device | Tadayuki Tsuda, Kanji Yano, Kazushi Watanabe, Makoto Tanaka, Kazuhiko Ishiwata | 1992-05-12 |
| 4910551 | Portable image forming apparatus | Shigeyoshi Onoda, Morikazu Mizutani, Shinji Kanemitsu, Hajime Kitajima | 1990-03-20 |
| 4875075 | Image reading device and image forming apparatus having same | Sumitoshi Sootome, Morikazu Mizutani, Shinji Kanemitsu, Hajime Kitajima, Shigeyoshi Onoda | 1989-10-17 |