Issued Patents All Time
Showing 26–48 of 48 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7856047 | System and method for concurrent frequency hopping of radio communications | Yijun Wang | 2010-12-21 |
| 7856558 | Biometric verification and duress detection system and method | Christopher D. Martin, Eric Oh, Kenneth L. Addy | 2010-12-21 |
| 7843312 | Wireless control of security system with key-operated key fob | Robert E. Lee, David S. Zakrewski | 2010-11-30 |
| 7680283 | Method and system for detecting a predetermined sound event such as the sound of breaking glass | — | 2010-03-16 |
| 7642910 | Multi-frequency alarm system receiver with interference detection | — | 2010-01-05 |
| 7636579 | Multi-frequency wireless transmitter | — | 2009-12-22 |
| 7394359 | Security system with wireless RF portable monitor | — | 2008-07-01 |
| 7355515 | Magnetic security device for securing doors | Robert E. Lee | 2008-04-08 |
| 7356429 | Method for remotely changing the sensitivity of a wireless sensor | — | 2008-04-08 |
| 7335886 | Recessed ceiling mounted passive infrared detector | Robert E. Lee | 2008-02-26 |
| 7323979 | Dual technology glass breakage detector | — | 2008-01-29 |
| 7321282 | MEM's reed switch array | Robert E. Lee, Kevin G. Piel | 2008-01-22 |
| 7218222 | MEMS based space safety infrared sensor apparatus and method for detecting a gas or vapor | Robert E. Lee | 2007-05-15 |
| 7176463 | Method and apparatus for large signal detection in passive infrared sensor applications | — | 2007-02-13 |
| 7145455 | MEMS based space safety infrared sensor apparatus and method | Robert E. Lee | 2006-12-05 |
| 7142111 | Method of programming security control panels for door entry device compatibility | Hong-Jyh Chen | 2006-11-28 |
| 7119681 | MEMS based garage door sensor | — | 2006-10-10 |
| 6963280 | Door security device for use in security systems | — | 2005-11-08 |
| 6952165 | Concealed wireless sensor with external antenna | John Kovach | 2005-10-04 |
| 6724316 | Method and apparatus for detection of motion with a gravitational field detector in a security system | Kenneth L. Addy | 2004-04-20 |
| 6351214 | Glass breakage detector | Ying Xiong, Christopher R. Paul, John E. Foster | 2002-02-26 |
| 6236313 | Glass breakage detector | Ying Xiong, Christopher R. Paul, John E. Foster | 2001-05-22 |
| 5576977 | Filter for eliminating the effects of fluorescent lights on microwave transceivers | — | 1996-11-19 |