Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6833226 | Electrophotographic apparatus, process cartridge and electrophotographic photosensitive member | Kumiko Takizawa, Wataru Kitamura | 2004-12-21 |
| 6825979 | Optical system having a diffractive optical element, and optical apparatus | — | 2004-11-30 |
| 6791754 | Optical system having a diffractive optical element, and optical apparatus | — | 2004-09-14 |
| 6703174 | Electrophotographic apparatus and process cartridge | Wataru Kitamura | 2004-03-09 |