Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867562 | Atomic absorption spectrophotometer | Konosuke Oishi, Masamichi Tsukada, Toyoharu Okumoto, Hayato Tobe | 1989-09-19 |
| 4800174 | Method for producing an amorphous silicon semiconductor device using a multichamber PECVD apparatus | Shinichiro Ishihara, Takashi Hirao | 1989-01-24 |