Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5638036 | Acoustic wave ladder filter with unequal series and shunt transducer periodicities and method of making | David Penunuri | 1997-06-10 |
| 5635883 | Acoustic wave filter with filter-shaping element and method | David Penunuri, Frederick Y. Cho | 1997-06-03 |
| 5600287 | Acoustic wave filter with reduced bulk-wave scattering loss, ladder filter incorporating same and method | Philip P. Kwan, David Penunuri | 1997-02-04 |