Issued Patents All Time
Showing 26–50 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7075491 | Portable radio antenna satellite system, method and device | — | 2006-07-11 |
| 7053843 | Multi-band antenna system | — | 2006-05-30 |
| 7023323 | Frequency hopping spread spectrum passive acoustic wave identification device | — | 2006-04-04 |
| 6995654 | Apparatus and method for locating a tagged item | — | 2006-02-07 |
| 6950009 | Dual mode transmitter/receiver and decoder for RF transponder units | — | 2005-09-27 |
| 6775616 | Environmental location system | — | 2004-08-10 |
| 6633226 | Frequency hopping spread spectrum passive acoustic wave identification device | — | 2003-10-14 |
| 6611224 | Backscatter transponder interrogation device | Halvor Skeie | 2003-08-26 |
| 6611758 | Environmental location system | — | 2003-08-26 |
| 6580358 | Dual mode transmitter-receiver and decoder for RF transponder tags | — | 2003-06-17 |
| 6531957 | Dual mode transmitter-receiver and decoder for RF transponder tags | — | 2003-03-11 |
| 6433671 | Dual mode transmitter-receiver and decoder for RF transponder tags | — | 2002-08-13 |
| 6424916 | Environmental location system | — | 2002-07-23 |
| 6388360 | Surface acoustic wave transponder configuration | Halvor Skeie | 2002-05-14 |
| 6259991 | Environmental location system | — | 2001-07-10 |
| 6208062 | Surface acoustic wave transponder configuration | Halvor Skeie | 2001-03-27 |
| 6114971 | Frequency hopping spread spectrum passive acoustic wave identification device | — | 2000-09-05 |
| 6107910 | Dual mode transmitter/receiver and decoder for RF transponder tags | — | 2000-08-22 |
| 6060815 | Frequency mixing passive transponder | — | 2000-05-09 |
| 5986382 | Surface acoustic wave transponder configuration | — | 1999-11-16 |
| 5252979 | Universal communication system | — | 1993-10-12 |
| 5182570 | End fed flat antenna | Jon L. Nagel | 1993-01-26 |
| 5164985 | Passive universal communicator system | Raphael Tobias | 1992-11-17 |
| 5095240 | Inductively coupled SAW device and method for making the same | Jon L. Nagel, Richard D. Smith | 1992-03-10 |
| 4737789 | Inductive antenna coupling for a surface acoustic wave transponder | — | 1988-04-12 |