| 8442193 |
Domestic to international collect call blocking |
Arthur Lance Springer |
2013-05-14 |
| 8170947 |
Fraud detection based on call attempt velocity on terminating number |
Erin C. Jackman |
2012-05-01 |
| 7760862 |
Domestic to international collect call blocking |
Arthur Lance Springer |
2010-07-20 |
| 7366289 |
Domestic origination to international termination country set logic |
Arthur Lance Springer |
2008-04-29 |
| 7236954 |
Fraud detection based on call attempt velocity on terminating number |
Erin C. Jackman |
2007-06-26 |
| 7079635 |
Domestic origination to international termination country set logic |
Arthur Lance Springer |
2006-07-18 |
| 6947532 |
Fraud detection based on call attempt velocity on originating number |
Erin C. Jackman |
2005-09-20 |
| 6801607 |
System and method for preventing fraudulent calls using a common billing number |
Erin C. Jackman, Ron Zimmerman |
2004-10-05 |
| 6782083 |
ISN call interrupt |
Arthur Lance Springer, Jeffrey D. Cahill, David K. Vognsen |
2004-08-24 |
| 6636592 |
Method and system for using bad billed number records to prevent fraud in a telecommunication system |
Arthur Lance Springer |
2003-10-21 |
| 6618475 |
Domestic origination to international termination country set logic |
Arthur Lance Springer |
2003-09-09 |
| 6590967 |
Variable length called number screening |
Arthur Lance Springer |
2003-07-08 |
| 6570968 |
Alert suppression in a telecommunications fraud control system |
Erin C. Jackman |
2003-05-27 |
| 6556669 |
International origination to domestic termination call blocking |
Arthur Lance Springer |
2003-04-29 |
| 6418212 |
Telephone fraud detection and prevention |
Anna Harrison, Erin C. Jackman |
2002-07-09 |
| 6404865 |
Domestic to country call intercept process (CIP) |
Arthur Lance Springer |
2002-06-11 |
| 6404871 |
Termination number screening |
Arthur Lance Springer |
2002-06-11 |
| 6396915 |
Country to domestic call intercept process (CIP) |
Arthur Lance Springer |
2002-05-28 |
| 6335971 |
Country to country call intercept process |
Arthur Lance Springer |
2002-01-01 |