Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5130680 | Ladder-type electric filter | Shoji Shimizu | 1992-07-14 |
| 5077544 | Ladder-type piezoelectric filter having higher input and output Qm values | Tatsuo Ogawa | 1991-12-31 |
| 4398162 | Ladder-type piezoelectric filters | — | 1983-08-09 |