Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4931410 | Process for producing semiconductor integrated circuit device having copper interconnections and/or wirings, and device produced | Takafumi Tokunaga, Masatoshi Tsuneoka | 1990-06-05 |
| 4830891 | Method for selective deposition of metal thin film | Eisuke Nishitani, Susumu Tsuzuku, Mitsuo Nakatani, Masaaki Maehara, Mitsuaki Horiuchi | 1989-05-16 |
| 4368230 | Photomask | Masatoshi Migitaka | 1983-01-11 |
| 4256778 | Method of inspecting and retouching a photo mask | Masatoshi Migitaka | 1981-03-17 |
| 4219731 | Method for detecting object picture by electron beam | Masatoshi Migitaka | 1980-08-26 |