Issued Patents 2003
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6619870 | Collector type writing implement | Yojiro Sano | 2003-09-16 |
| 6619871 | Collector type writing instrument | Yojiro Sano | 2003-09-16 |
| 6622000 | Developing apparatus having a charge amount control member | Hiroyuki Hirakawa, Shigeru Nishio | 2003-09-16 |
| 6602012 | Collector type writing instrument | Yojiro Sano | 2003-08-05 |
| 6588963 | Collector type writing instrument | Yojiro Sano | 2003-07-08 |