Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6736887 | Water-based ink with polyoxyalkylene oxide derivatives | Ryuma Mizushima | 2004-05-18 |
| 6730780 | Water-based ink | Shigemi Wakabayashi, Kenji Kaida, Makoto Sakakibara | 2004-05-04 |