Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6611094 | Double-faced vacuum fluorescent display device and method for driving same | Yukio Ogawa, Katsutoshi Kougo, Yoshikazu Iidaka, Hiroaki Kawasaki | 2003-08-26 |
| 6522062 | Fluorescent display device and method for driving same | Yukio Ogawa, Katsutoshi Kougo, Hiroaki Kawasaki | 2003-02-18 |
| 6509693 | Filament for fluorescent display device | Yoshihisa Yonezawa, Yukio Ogawa, Katsutoshi Kogo, Satoshi Yoshimura | 2003-01-21 |