DT

David A. Tschirhart

LC Level 3 Communications: 13 patents #37 of 630Top 6%
AS Alcatel Usa Sourcing: 1 patents #151 of 360Top 45%
Overall (All Time): #331,876 of 4,157,543Top 8%
14
Patents All Time

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #TitleCo-InventorsDate
12244488 Carrier identification code delivery to an egress network of a telecommunications network 2025-03-04
11936804 Method and system for routing of inbound toll-free communications Ken Shomaker 2024-03-19
11929918 Carrier identification code delivery to an egress network of a telecommunications network 2024-03-12
11316983 Method and system for routing of inbound toll-free communications Ken Shomaker 2022-04-26
11233728 Carrier identification code delivery to an egress network of a telecommunications network 2022-01-25
10575366 Last resource disaster routing in a telecommunications network Claudia M. Combellas, Dana A. Johnston, Adam C. Uzelac 2020-02-25
10524023 Enterprise toll-free call routing Joseph Roy 2019-12-31
10362631 Last resource disaster routing in a telecommunications network Claudia M. Combellas, Dana A. Johnston, Adam C. Uzelac 2019-07-23
10341197 Virtual service control point in a network Richard Dean Terpstra 2019-07-02
10270917 Method and system for routing of inbound toll-free communications 2019-04-23
10257590 Enterprise toll-free call routing Joseph Roy 2019-04-09
9912551 Virtual service control point in a network Richard Dean Terpstra 2018-03-06
8761369 Central services hub for a telecommunications network Richard Dean Terpstra, Matthew Abram Karp, Michael Jared Officer 2014-06-24
6178438 Service management system for an advanced intelligent network Keith Deacon, Marc Gauthier 2001-01-23