Issued Patents All Time
Showing 25 most recent of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9544429 | Solutions for voice over internet protocol (VoIP) 911 location services | Yinjun Zhu, Roger S. Marshall, Steven P. Helme | 2017-01-10 |
| 9467836 | Enhanced E911 location information using voice over internet protocol (VoIP) | Roger S. Marshall, Steven P. Helme | 2016-10-11 |
| 9420444 | Enhanced E911 network access for call centers | John Gordon Hines, Jonathan Croy | 2016-08-16 |
| 9390615 | Emergency alert for voice over internet protocol (VoIP) | Don Mitchell, Jonathan Croy | 2016-07-12 |
| 9237228 | Solutions for voice over internet protocol (VoIP) 911 location services | Yinjun Zhu, Roger S. Marshall, Steven P. Helme | 2016-01-12 |
| 9232062 | Mobile automatic location identification (ALI) for first responders | — | 2016-01-05 |
| 9125039 | Enhanced E911 network access for a call center using session initiation protocol (SIP) messaging | Gordon John Hines, Jonothan Croy | 2015-09-01 |
| D729660 | Spectrophotometer | — | 2015-05-19 |
| D729661 | Spectrophotometer | — | 2015-05-19 |
| 8873718 | Enhanced E911 location information using voice over internet protocol (VoIP) | Roger S. Marshall, Steven P. Helme | 2014-10-28 |
| 8798572 | Solutions for voice over internet protocol (VoIP) 911 location services | Yinjun Zhu, Roger S. Marshall, Steven P. Helme | 2014-08-05 |
| 8681946 | Mobile automatic location identification (ALI) for first responders | — | 2014-03-25 |
| 8682286 | Enhanced E911 network access for a call center using session initiation protocol (SIP) messaging | John Gordon Hines, Jonathan Croy | 2014-03-25 |
| D698036 | Cuvette | — | 2014-01-21 |
| 8520805 | Video E911 | — | 2013-08-27 |
| 8406728 | Enhanced E911 network access for call centers | John Gordon Hines, Jonathan Croy | 2013-03-26 |
| 8385881 | Solutions for voice over internet protocol (VoIP) 911 location services | Yinjun Zhu, Roger S. Marshall, Steven P. Helme | 2013-02-26 |
| 8369825 | Enhanced E911 network access for a call center using session initiation protocol (SIP) messaging | John Gordon Hines, Jonathan Croy | 2013-02-05 |
| 8175570 | E911 call blocking for non-initialized wireless telephones | — | 2012-05-08 |
| 8150363 | Enhanced E911 network access for call centers | John Gordon Hines, Jonathan Croy | 2012-04-03 |
| 8150364 | Enhanced E911 network access for a call center using session initiation protocol (SIP) messaging | John Gordon Hines, Jonathan Croy | 2012-04-03 |
| 8116722 | E911 call blocking for non-initialized wireless telephones | — | 2012-02-14 |
| 8103242 | E911 call blocking for non-initialized wireless telephones | — | 2012-01-24 |
| 8050386 | Mobile automatic location identification (ALI) for first responders | — | 2011-11-01 |
| 7933385 | Emergency alert for voice over internet protocol (VoIP) | Don Mitchell, Jonathan Croy | 2011-04-26 |