Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8538002 | Telephone system | Harold E. A. Hansen, II | 2013-09-17 |
| 8391298 | Phone directory in a voice over IP telephone system | Harold E. A. Hansen, II | 2013-03-05 |
| 8194845 | Telephone system | Harold E. A. Hansen, II | 2012-06-05 |
| 7860083 | Shared knowledge in a telephone system | Harold E. A. Hansen, II | 2010-12-28 |
| 7826440 | Quality of service in a remote telephone | Harold E. A. Hansen, II | 2010-11-02 |
| 7564834 | Shared knowledge in a telephone system | Harold E. A. Hansen, II | 2009-07-21 |
| 7421066 | Telephone call/voice processing system | Harold E. A. Hansen, II | 2008-09-02 |
| RE39722 | Telephone call/voice processing system | Harold E. A. Hansen, II | 2007-07-10 |
| 7221741 | Dialing using caller ID | Harold E. A. Hansen, II | 2007-05-22 |
| 7123699 | Voice mail in a voice over IP telephone system | Harold E. A. Hansen, II | 2006-10-17 |
| 7068684 | Quality of service in a voice over IP telephone system | Harold E. A. Hansen, II | 2006-06-27 |
| 6940962 | Dial on-hold | Harold E. A. Hansen, II | 2005-09-06 |
| 6925167 | Service observing in a voice over IP telephone system | Harold E. A. Hansen, II | 2005-08-02 |
| 6842505 | Communications system enhanced with human presence sensing capabilities | Harold E. A. Hansen, II | 2005-01-11 |
| 6252944 | Telephone call/voice processing system | Harold E. A. Hansen, II | 2001-06-26 |
| 6067349 | Dialing using caller ID | Harold E. A. Hansen II | 2000-05-23 |