Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7582849 | Thermal head, driving method and thermal head drive circuit | Sumio Watanabe, Fumio Sakurai, Yukihiro Mori, Norio Endo, Tomoyuki Yokoyama | 2009-09-01 |
| 5811953 | Motor driving circuit and method | Sumio Watanabe, Katsuhiro Maeda | 1998-09-22 |
| 5319390 | Thermal printer apparatus | Sumio Watanabe, Katsuhiro Maeda | 1994-06-07 |