Issued Patents All Time
Showing 25 most recent of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9406205 | Method and apparatus for activating and controlling fire and mass notification visual devices | Joseph R. Keller, David John Salgueiro | 2016-08-02 |
| 8939615 | Optically efficient notification device for use in life safety wall strobe applications | Wei Rong, Crystal Pierz | 2015-01-27 |
| 8717168 | Method and apparatus for providing an ASIC controlled alarm unit | Shawn Patrick Keeney, Luy B. Nguyen, John Yerger, Erik Johnson | 2014-05-06 |
| 8496363 | Optically efficient notification device for use in life safety wall strobe applications | Wei Rong, Crystal Pierz | 2013-07-30 |
| 8465170 | Optically efficient notification device for use in life safety ceiling strobe applications | Wei Rong, Joseph R. Keller, Crystal Pierz | 2013-06-18 |
| 8457330 | Method and apparatus for boosting an audible signal in a notification system | John W. Curran, Edward V. Applegate, Richard H. Fetterly, Anthony W. Russo, II, Brian E. Bizjak | 2013-06-04 |
| 8220948 | Optically efficient notification device for use in life safety ceiling strobe applications | Wei Rong, Joseph R. Keller, Crystal Pierz | 2012-07-17 |
| 8113694 | Optically efficient notification device for use in life safety wall strobe applications | Wei Rong, Crystal Pierz | 2012-02-14 |
| 7907047 | Apparatus and method for synchronizing visual/audible alarm units in an alarm system | John W. Curran | 2011-03-15 |
| 7830252 | Method and apparatus for providing an ASIC controlled alarm unit | Shawn Patrick Keeney, Luy B. Nguyen, John Yerger, Erik Johnson | 2010-11-09 |
| 7428311 | Method and apparatus for boosting an audible signal in a notification system | John W. Curran, Edward V. Applegate, Richard H. Fetterly, Anthony W. Russo, II, Brian E. Bizjak | 2008-09-23 |
| 7403096 | Apparatus and method for synchronizing visual/audible alarm units in an alarm system | John W. Curran | 2008-07-22 |
| 7079011 | Apparatus and method for synchronizing visual/audible alarm units in an alarm system | John W. Curran | 2006-07-18 |
| 6906616 | Apparatus and method for synchronizing visual/audible alarm units in an alarm system | John W. Curran | 2005-06-14 |
| RE38183 | Synchronization circuit for visual/audio alarms | Edward V. Applegate | 2003-07-15 |
| 6583718 | Apparatus and method for synchronizing visual/audible alarm units in an alarm system | John W. Curran | 2003-06-24 |
| 6411201 | Strobe alarm with strobe intensity selector switch | Inhong Hur, John W. Curran | 2002-06-25 |
| 6369696 | Apparatus and method for synchronizing visual/audible alarm units in an alarm system | John W. Curran | 2002-04-09 |
| 6311021 | Multi-candela alarm unit | — | 2001-10-30 |
| 6217196 | Strobe light system | Luy B. Nguyen, David Strome | 2001-04-17 |
| 6194994 | Apparatus and method for synchronizing visual/audible alarm units in an alarm system | John W. Curran | 2001-02-27 |
| 5982275 | Synchronized video/audio alarm system | — | 1999-11-09 |
| RE35837 | Microprocessor-controlled strobe light | Edward V. Applegate | 1998-07-07 |
| 5751210 | Synchronized video/audio alarm system | — | 1998-05-12 |
| 5673030 | Zero inrush alarm circuit | — | 1997-09-30 |