Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6778038 | Piezoelectric resonant filter, duplexer, and method of manufacturing same | Taku Takeishi, Katsuhiko Gunji | 2004-08-17 |
| 6774746 | Thin film bulk acoustic resonator filters with a piezoelectric layer of lead scandium tantalum oxide | Roger W. Whatmore, Paul B. Kirby, Qingxin Su | 2004-08-10 |