Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6769827 | Collector type writing implement | Yojiro Sano | 2004-08-03 |
| 6681091 | Development method and image formation apparatus | Tadashi Iwamatsu, Hiroyuki Hirakawa, Tetsuro Toyoshima | 2004-01-20 |