Issued Patents 2004
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6832058 | Image forming apparatus including a maximum charge quantity of toner particles forming useless toner | Kunio Shigeta, Takenobu Kimura, Yotaro Sato | 2004-12-14 |
| 6798999 | Image forming apparatus | Seiko Itagaki, Kunio Shigeta | 2004-09-28 |
| 6770227 | Carbon material | Hiroto Kobayashi | 2004-08-03 |
| 6770393 | Proton conducting polymer, method for producing the same, solid polymer electrolyte and electrode | Masao Ichikawa, Masaru Iguchi, Hiroyuki Oyanagi | 2004-08-03 |
| 6767664 | Proton conducting polymer, method for producing the same, solid polymer electrolyte and electrode | Masao Ichikawa, Masaru Iguchi, Hiroyuki Oyanagi | 2004-07-27 |
| 6721526 | Image forming apparatus with improved developing device | Kunio Shigeta, Takenobu Kimura, Yotaro Sato | 2004-04-13 |