Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6830611 | Oil-base ink composition, writing utensils and dyes to be used therein | Shuuji Ichikawa | 2004-12-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6830611 | Oil-base ink composition, writing utensils and dyes to be used therein | Shuuji Ichikawa | 2004-12-14 |