Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6340262 | Writing implement with an ink collector | Hisashi Iida | 2002-01-22 |
| 5829904 | Writing implement ink conducting core | Kazuaki Matsumoto, Jun Hosoya | 1998-11-03 |
| 5282893 | Ethanol type marking ink composition | — | 1994-02-01 |