Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6783906 | Image forming apparatus | Toshihisa Ishida, Tadayuki Sawai, Kouji Kida, Yuko Takeda | 2004-08-31 |
| 6780553 | Electrophotographic photoreceptor and management system of the same | Hiroshi Sugimura, Kenichi Nagata, Yoshimi Kojima | 2004-08-24 |
| 6775497 | Electrophotographic photosensitive body with hollow base and filler element, electrophotographic apparatus using same | Hiroshi Sugimura, Koichi Toriyama, Mikio Kakui, Rikiya Matsuo, Hisayuki Utsumi +1 more | 2004-08-10 |
| 6673317 | Automatic testing apparatus | Kiyoji Hashimoto, Masaru Fujimoto, Mamoru Shiratori, Masato Ichikawa | 2004-01-06 |