Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6659672 | Writing implement | — | 2003-12-09 |
| 6517273 | Free-ink type writing instrument | Takao Koyama, Atsushi Iwasa | 2003-02-11 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6659672 | Writing implement | — | 2003-12-09 |
| 6517273 | Free-ink type writing instrument | Takao Koyama, Atsushi Iwasa | 2003-02-11 |