Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5486820 | Traffic sensor having piezoelectric sensors which distinguish lanes | Joseph V. Chatigny, Mitchell L. Thompson, Donald Halvorsen | 1996-01-23 |
| 5309519 | Electroacoustic novelties | Kyung-Tae Park | 1994-05-03 |
| 5115472 | Electroacoustic novelties | Kyung-Tae Park | 1992-05-19 |
| 4843275 | Air buoyant piezoelectric polymeric film microphone | — | 1989-06-27 |
| 4734044 | Connectors for use with piezoelectric polymeric film transducers | — | 1988-03-29 |
| 4638207 | Piezoelectric polymeric film balloon speaker | — | 1987-01-20 |
| 4633122 | Means for electrically connecting electrodes on different surfaces of piezoelectric polymeric films | — | 1986-12-30 |
| 4633123 | Piezoelectric polymer keyboard apparatus | — | 1986-12-30 |
| 4565615 | Glow discharge stabilization of piezoelectric polymer film | — | 1986-01-21 |
| 4392178 | Apparatus for the rapid continuous corona poling of polymeric films | — | 1983-07-05 |
| 4365283 | Corona discharge poling process | — | 1982-12-21 |
| 4234868 | Personal verification device | — | 1980-11-18 |