Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6616055 | Returnable container physical distribution management system using information system | Kousaku Okamura, Yasuo Nakabayashi | 2003-09-09 |
| 6249660 | Imaging cartridge for use in an image forming apparatus including detachable electrode member | Kouji Matsushita | 2001-06-19 |
| 6208499 | Corona discharge device | Noboru Yonekawa, Kouji Matsushita | 2001-03-27 |
| 5940661 | Image forming apparatus with a charging member which removes smears on an image forming member | Masataka Yagi, Tamotsu Sakuraba, Tetsumaru Fujita, Narutaka Yoshida, Akira Hirota +3 more | 1999-08-17 |
| 5911097 | Image forming apparatus and method using charge control means | Masayasu Haga, Tsugihito Yoshiyama, Masami Matsuura, Akira Hirota | 1999-06-08 |
| 5842087 | Charging device for image forming apparatus | Kouji Matsushita, Futoshi Okazaki | 1998-11-24 |
| 5787327 | Charging device for image forming apparatus | Kouji Matsushita | 1998-07-28 |
| 5666604 | Image forming apparatus with charging device having projecting zip discharge electrode and improved parameters | Noboru Yonekawa, Kouji Matsushita | 1997-09-09 |
| 5596391 | Image forming apparatus having transfer constant current source adjustable in response to the thickness of dielectric layer | Kouji Matsushita, Noboru Yonekawa | 1997-01-21 |
| 5532798 | Charging device having a plate electrode and a cleaning device for cleaning edges of the plate electrode | Kouji Matsushita, Noboru Yonekawa, Noboru Ito, Yoshihiro Shojo, Katsuhiko Takeda | 1996-07-02 |
| 5466938 | Corona discharge device | Yasunori Nakayama, Noboru Yonekawa, Kouji Matsushita, Shizuo Yuge | 1995-11-14 |
| 5191796 | Acoustic-emission sensor | Teruo Kishi, Mitsuharu Shiwa, Yoshinobu Ohara | 1993-03-09 |