Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6453035 | Method and apparatus for providing virtual private network services over public switched telephone network | Elias Psarras, Marc Cotton | 2002-09-17 |
| 6097801 | Number portability using enhanced routing table | L. Lloyd Williams, John Milton Anderson, Michael Gaskin, William Edward Taylor | 2000-08-01 |
| 6047055 | Number portability with database query | L. Lloyd Williams | 2000-04-04 |
| 6002757 | Number portability using enhanced routing table | L. Lloyd Williams | 1999-12-14 |
| 5915009 | Number portability using ISUP message option | L. Lloyd Williams | 1999-06-22 |
| 5768358 | Method and apparatus for routing a call to a number corresponding to a virtual public dial plan or to an existing dial plan | Daniel J. Venier, L. Lloyd Williams, Morlen R. Reynolds | 1998-06-16 |
| 5610977 | Number portability using ISUP message option | L. Lloyd Williams | 1997-03-11 |
| 5602909 | Number portability using database query | L. Lloyd Williams | 1997-02-11 |
| 5583926 | Method and apparatus for routing a call to a number corresponding to a virtual public dial plan or to an existing dial plan | Daniel J. Venier, L. Lloyd Williams, Morlen R. Reynolds | 1996-12-10 |