Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6618502 | Color image processing method and apparatus | Fujio Okada, Keiichi Negishi | 2003-09-09 |
| 6459447 | Video signal transmission device | Fujio Okada, Keiichi Negishi | 2002-10-01 |
| 5220252 | Focus voltage correction circuit for cathode ray tubes | Shogo Koseki, Nobuaki Nishijima | 1993-06-15 |
| 4961031 | Focus voltage regulation circuit for cathode ray tubes | Shogo Koseki | 1990-10-02 |