Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6407494 | Shadow mask type color cathode ray tube whose panel surface is flat | Mutsumi Maehara | 2002-06-18 |
| 4786900 | Electronic key apparatus | Katsuaki Karasawa, Hideyuki Shoji, Tomoo Kasuo, Kazunori Kita, Keisuke Tonomura +1 more | 1988-11-22 |