Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5049842 | Dielectric resonator having a cutout portion for receiving an unitary tuning element conforming to the cutout shape | Youhei Ishikawa, Hidekazu Wada, Toru Tanizaki, Shigeji Arakawa, Shinichi Kunioka | 1991-09-17 |
| 4728913 | Dielectric resonator | Youhei Ishikawa, Hidekazu Wada | 1988-03-01 |