Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7396397 | Ink composition for oil-based ballpoint pen and method for production thereof, and ballpoint pen refill | — | 2008-07-08 |
| 6114412 | Water-based ink with metallic gloss for direct fill in ball-point pen | Teruaki Fukasawa | 2000-09-05 |
| 6083311 | Water based ink having metallic luster adapted for direct-filling in ball-point pen | Teruaki Fukasawa | 2000-07-04 |