Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8553857 | Systems and methods for receiving telephone calls via instant messaging | Joel Hanson, Mark O'Brien, Mike Kirchner, Tom Galvin, Donald J. Maurer +1 more | 2013-10-08 |
| 7274778 | Systems and methods for receiving telephone calls via instant messaging | Joel Hanson, Mark O'Brien, Mike Kirchner, Tom Galvin, Donald J. Maurer +1 more | 2007-09-25 |
| 6697474 | Systems and methods for receiving telephone calls via instant messaging | Joel Hanson, Mark O'Brien, Mike Kirchner, Tom Galvin, Donald J. Maurer +1 more | 2004-02-24 |
| 6351464 | Virtual second line hybrid network communication system | Tom Galvin, Joel Hanson, Mike Kirchner, Mark O'Brien | 2002-02-26 |