Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857975 | GaAs field effect transistor having a WSi Schottky gate electrode improved for high-speed operation | — | 1989-08-15 |
| 4850534 | Ultrasonic wave nebulizer | Minoru Takahashi, Kiyoto Sudou | 1989-07-25 |