Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6590474 | Multilayer piezoelectric filter with an air vent between two resonator chambers | Kazuhiro Hayashi, Masayuki Watanabe | 2003-07-08 |
| 5939957 | 6-elements ladder type piezoelectric filter | — | 1999-08-17 |
| 5392012 | Piezoelectric filter in a casing sealed by an insulating filler and having cranked connecting legs | Tatsuo Ogawa, Yasuhiko Nakagawa | 1995-02-21 |