Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7546085 | Method for preventing an unauthorized device from operating in a 800 MHz trunked radio communications system | Tanhoa Trandai, Marc W. Cassidy, John M. Gilbert, Donald R. Griffis, Daniel J. McDonald | 2009-06-09 |
| 7536196 | Method for preventing an unauthorized device from operating in an 800 MHz trunked radio communications system using channels 559 to 320 | Tanhoa Trandai, Marc W. Cassidy, John M. Gilbert, Donald R. Griffis, Daniel J. McDonald | 2009-05-19 |
| 7228130 | Method for preventing an unauthorized device from operating in an 800 MHz trunked radio communications system using channels 319 to 0 | Tanhoa Trandai, Marc W. Cassidy, John M. Gilbert, Donald R. Griffis, Daniel J. McDonald | 2007-06-05 |
| 6131565 | Solar energy collector system | — | 2000-10-17 |
| 5997144 | Sealed reflector apparatus | Graham L. Morrison | 1999-12-07 |
| 5899199 | Solar energy collector system | — | 1999-05-04 |
| 5806002 | Method of scanning using resource analysis | David G. Wiatrowski | 1998-09-08 |
| 5523132 | Thin film solar selective surface coating | Qi Zhang, Anthony Monger | 1996-06-04 |
| 4638396 | Intrinsically safe battery circuit | Glenn A. Mukli, Paul C. Frew | 1987-01-20 |
| 4628905 | Solar selective surface coating | — | 1986-12-16 |
| 4557565 | Beam sunlighting device for building interiors | Nancy C. Ruck, Erik Harting | 1985-12-10 |
| 4327969 | Radiation concentrator and distributor | John E. Giutronich | 1982-05-04 |