Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5128275 | Method for fabricating a semiconductor device including a semi-insulating semiconductor layer | Masahiko Takikawa, Toshihide Kikkawa | 1992-07-07 |
| 4566006 | Gas discharge display apparatus | Yukio Okamoto, Shinichi Shinada | 1986-01-21 |
| 4486747 | Gas discharge display apparatus capable of emphasis display | Yukio Okamoto, Shinichi Shinada, Kazuhito Ikarashi, Osamu Igarashi | 1984-12-04 |
| 4333040 | Gas discharge display device | Yukio Okamoto, Eisuke Mitani, Atsushi Sumioka | 1982-06-01 |