Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7002288 | Electron tube and method for producing the same | Yoshihisa Yonezawa, Yukio Ogawa, Hiroaki Kawasaki, Yasuhiro Nohara | 2006-02-21 |
| 6611094 | Double-faced vacuum fluorescent display device and method for driving same | Yukio Ogawa, Kazuyoshi Ishikawa, Katsutoshi Kougo, Hiroaki Kawasaki | 2003-08-26 |