Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6228546 | Polymer, electrophotographic photosensitive member containing the polymer, process cartridge and electrophotographic apparatus having the electrophotographic photosensitive member | Akihiro Senoo, Kunihiko Sekido | 2001-05-08 |
| 5834145 | Electrophotographic photosensitve member and image forming apparatus | Kazuo Yoshinaga, Yuichi Hashimoto, Yasuko Hayashi | 1998-11-10 |
| 5666589 | Electrophotographic apparatus and image forming method using a photosensitive member with exposure characteristics responsive to field intensity | Kazuo Yoshinaga, Yukio Nagase, Hajime Miyazaki, Teigo Sakakibara, Yuichi Hashimoto +2 more | 1997-09-09 |
| 5629116 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus having the electrophotographic photosensitive member | Akihiro Senoo, Masato Tanaka | 1997-05-13 |
| 5604061 | Electrophotographic photosensitive member, process cartridge including same and electrophotographic apparatus | Kunihiko Sekido, Hajime Miyazaki, Akihiro Senoo | 1997-02-18 |
| 5488461 | Electrophotographic photosensitive member and electrophotographic apparatus using the same | Shintetsu Go, Koichi Suzuki, Kazuma Sato, Akira Shimada | 1996-01-30 |
| 5486440 | Electrophotographic photosensitive member, and process cartridge and electrophotographic apparatus employing the same | Hajime Miyazaki, Koichi Suzuki, Shintetsu Go, Kazuma Sato | 1996-01-23 |
| 5468584 | Electrophotographic photosensitive member having intermediate layer containing fine powder particles of tin oxide containing phosphorous and apparatus employing same | Shintetsu Go, Koichi Suzuki, Kazuma Sato, Akira Shimada | 1995-11-21 |
| 5464718 | Electrophotographic photosensitive member, process cartridge including same and electrophotographic apparatus | Akihiro Senoo, Masato Tanaka | 1995-11-07 |
| 5453342 | Electrophotographic photosensitive member, and electrophotographic apparatus, device unit, and facsimile machine employing the same | Shintetsu Go, Koichi Suzuki, Satomi Ohmura, Masato Tanaka | 1995-09-26 |
| 5411828 | Electrophotographic photosensitive member, and electrophotographic apparatus, device unit and facsimile machine having the photosensitive member | — | 1995-05-02 |
| 5356746 | Electrophotographic photosensitive member, electrophotographic apparatus, device unit and facsimile machine | Satomi Sugiyama, Koichi Suzuki, Shintetsu Go | 1994-10-18 |
| 5288575 | Electrophotographic photosensitive member, and electrophotographic apparatus, device unit and facsimile machine employing the photosensitive member | Koichi Suzuki, Shintetsu Go, Satomi Sugiyama | 1994-02-22 |
| 5278013 | Electrophotographic photosensitive member, and electrophotographic apparatus and facsimile machine employing the same | Koichi Suzuki | 1994-01-11 |
| 5272028 | Electrophotographic photosensitive member comprising a tris-azo pigment | Hajime Miyazaki, Toshie Miyaji | 1993-12-21 |
| 5246805 | Electrophotographic photosensitive member, and electrophotographic apparatus and facsimile employing the same | Hajime Miyazaki, Toshihiro Kikuchi | 1993-09-21 |
| 5219688 | Electrophotographic photosensitive member and electrophotographic apparatus and facsimile machine which use the electrophotographic photosensitive member | Koichi Suzuki | 1993-06-15 |
| 5194353 | Electrophotographic photosensitive member, and electrophotographic apparatus and facsimile employing the same | Masato Tanaka | 1993-03-16 |
| 5192632 | Electrophotographic bisazo photosensitive member, and electrophotographic apparatus and facsimile employing the same | Satomi Ohmura | 1993-03-09 |
| 5173383 | Electrophotographic photosensitive member, and electrophotographic apparatus and facsimile machine employing the same | Hajime Miyazaki, Toshie Miyaji | 1992-12-22 |
| 5093218 | Electrophotographic photosensitive member having an azo pigment | Toshie Miyaji, Hajime Miyazaki | 1992-03-03 |
| 4975349 | Electrophotographic photosensitive material using azo pigment containing coupler component | — | 1990-12-04 |
| 4868080 | Electrophotographic photosensitive member comprising aromatic azo pigment containing cyclic amino group | Shoji Umehara | 1989-09-19 |