Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6710536 | Display device using filament | Yoshihisa Yonezawa, Yukio Ogawa, Kazuyoshi Ishikawa, Satoshi Yoshimura | 2004-03-23 |
| 6509693 | Filament for fluorescent display device | Yoshihisa Yonezawa, Yukio Ogawa, Kazuyoshi Ishikawa, Satoshi Yoshimura | 2003-01-21 |