Captel products and services are covered by one or more of the following patents. Other patents pending.
5,724,405
5,909,482
5,974,116
6,075,841
6,075,842
6,233,314
6,307,921
6,493,426
6,504,910
6,510,206
6,549,611
6,567,503
6,594,346
6,603,835
6,748,053
6,882,707
6,885,731
6,934,366
7,003,082
7,006,604
7,164,753
7,319,740
7,555,104
7,660,398
7,881,441
8,213,578
8,416,925
8,515,024