Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6148167 | Developing apparatus with a developing regulating member | Keizou Takeuchi, Kazumasa Hayashi, Shigemitsu Tani, Takumi Kitano, Hiroyuki Suzuki | 2000-11-14 |
| 6049688 | Toner layer forming device for non-magnetic toner | Kazumasa Hayashi, Akinori Toyoda | 2000-04-11 |
| 5648839 | Image forming apparatus | Toshiharu Koshino, Kazumasa Hayashi, Kenji Asakura, Katsutoshi Ogawa | 1997-07-15 |
| 5640648 | Electrophotographic apparatus having sealing member | Kazumasa Hayashi, Katsutoshi Ogawa, Kenji Asakura, Toshiharu Koshino | 1997-06-17 |
| 5550619 | Electrophotographic apparatus of improved low image density | Hiroshi Terada, Hajime Yamamoto, Kazumasa Hayashi, Masahiro Aizawa | 1996-08-27 |
| 5539502 | Multi-chamber electro-photographic developing unit for image forming apparatus | Toshiharu Koshino, Masahiko Nakamura, Toichi Matsumura, Hiroshi Komata, Kazumasa Hayashi +2 more | 1996-07-23 |