Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9154624 | Call processing and subscriber registration systems and methods | David S. Trandal, Robert J. Duva, Robert F. Smith | 2015-10-06 |
| 8750469 | Methods and systems for call processing | Adrian Van Haaften, David Giannini, Eric T. Johnson, David F. Hofstatter, David S. Trandal +2 more | 2014-06-10 |
| 8718243 | Call processing and subscriber registration systems and methods | David S. Trandal, Robert J. Duva, Robert F. Smith | 2014-05-06 |
| 8494504 | Methods and systems for telephony processing, including location based call transfers | Leland W. Kirchhoff, David S. Trandal | 2013-07-23 |
| 8472592 | Methods and systems for call processing | Adrian Van Haaften, David Giannini, Eric T. Johnson, David F. Hofstatter, David S. Trandal +2 more | 2013-06-25 |
| 8259911 | Call processing and subscriber registration systems and methods | David S. Trandal, Robert J. Duva, Robert F. Smith | 2012-09-04 |
| 8000455 | Methods and systems for call processing | Adrian Van Haaften, David Giannini, Eric T. Johnson, David F. Hofstatter, David S. Trandal +2 more | 2011-08-16 |
| 7409048 | Call processing and subscriber registration systems and methods | David S. Trandal, Robert J. Duva, Robert F. Smith | 2008-08-05 |