Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6696905 | Dielectric filter device having perpendicular bores for improved pass band characteristics | Katsumi Umeda, Kenichi Ezaki | 2004-02-24 |
| 6677836 | Dielectric filter device having conductive strip removed for improved filter characteristics | Katsumi Umeda, Kenichi Ezaki | 2004-01-13 |
| 6529097 | Coaxial resonator, and dielectric filter and dielectric duplexer comprising same | Masahisa Nakaguchi | 2003-03-04 |
| 5977848 | Polar dielectric filter and dielectric duplexer incorporating same | Masahisa Nakaguchi | 1999-11-02 |