David Allen Tschirhart

Person

Dale, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Method and system for routing of inbound toll-free communications
- Patent number 11,936,804
- Issue date Mar 19, 2024
- Level 3 Communications, LLC
- David A. Tschirhart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Carrier identification code delivery to an egress network of a tele...
- Patent number 11,929,918
- Issue date Mar 12, 2024
- Level 3 Communications, LLC
- David A. Tschirhart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system for routing of inbound toll-free communications
- Patent number 11,316,983
- Issue date Apr 26, 2022
- Level 3 Communications, LLC
- David A. Tschirhart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Carrier identification code delivery to an egress network of a tele...
- Patent number 11,233,728
- Issue date Jan 25, 2022
- Level 3 Communications, LLC
- David A. Tschirhart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Last resource disaster routing in a telecommunications network
- Patent number 10,575,366
- Issue date Feb 25, 2020
- Level 3 Communications, LLC
- Claudia M. Combellas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Enterprise toll-free call routing
- Patent number 10,524,023
- Issue date Dec 31, 2019
- Level 3 Communications, LLC
- David A. Tschirhart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Last resource disaster routing in a telecommunications network
- Patent number 10,362,631
- Issue date Jul 23, 2019
- Level 3 Communications, LLC
- Claudia M. Combellas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Virtual service control point in a network
- Patent number 10,341,197
- Issue date Jul 2, 2019
- Level 3 Communications, LLC
- Richard Dean Terpstra
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system for routing of inbound toll-free communications
- Patent number 10,270,917
- Issue date Apr 23, 2019
- Level 3 Communications, LLC
- David A. Tschirhart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Enterprise toll-free call routing
- Patent number 10,257,590
- Issue date Apr 9, 2019
- Level 3 Communications, LLC
- David A. Tschirhart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Virtual service control point in a network
- Patent number 9,912,551
- Issue date Mar 6, 2018
- Level 3 Communications, LLC
- Richard Dean Terpstra
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Central services hub for a telecommunications network
- Patent number 8,761,369
- Issue date Jun 24, 2014
- Level 3 Communications, LLC
- Richard Dean Terpstra
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND SYSTEM FOR ROUTING OF INBOUND TOLL-FREE AND TOLLED COMMU...
- Publication number 20240430366
- Publication date Dec 26, 2024
- Level 3 Communications, LLC
- David A. Tschirhart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND SYSTEM FOR ROUTING OF INBOUND TOLL-FREE COMMUNICATIONS
- Publication number 20240267470
- Publication date Aug 8, 2024
- Level 3 Communications, LLC
- David A. TSCHIRHART
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
CARRIER IDENTIFICATION CODE DELIVERY TO AN EGRESS NETWORK OF A TELE...
- Publication number 20240214305
- Publication date Jun 27, 2024
- Level 3 Communications, LLC
- David A. Tschirhart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
IMPROVED METHOD AND SYSTEM FOR ROUTING OF INBOUND TOLL-FREE COMMUNI...
- Publication number 20220239784
- Publication date Jul 28, 2022
- LEVEL 3 COMMUNICATIONS, LLC
- David A. TSCHIRHART
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
CARRIER IDENTIFICATION CODE DELIVERY TO AN EGRESS NETWORK OF A TELE...
- Publication number 20220116314
- Publication date Apr 14, 2022
- LEVEL 3 COMMUNICATIONS, LLC
- David A. Tschirhart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND SYSTEM FOR ROUTING OF INBOUND TOLL-FREE COMMUNICATIONS
- Publication number 20200382652
- Publication date Dec 3, 2020
- LEVEL 3 COMMUNICATIONS, LLC
- David A. TSCHIRHART
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
LAST RESOURCE DISASTER ROUTING IN A TELECOMMUNICATIONS NETWORK
- Publication number 20190335533
- Publication date Oct 31, 2019
- LEVEL 3 COMMUNICATIONS, LLC
- Claudia M. Combellas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND SYSTEM FOR ROUTING OF INBOUND TOLL-FREE COMMUNICATIONS
- Publication number 20190245981
- Publication date Aug 8, 2019
- LEVEL 3 COMMUNICATIONS, LLC
- David A. Tschirhart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ENTERPRISE TOLL-FREE CALL ROUTING
- Publication number 20190238955
- Publication date Aug 1, 2019
- LEVEL 3 COMMUNICATIONS, LLC
- David A. Tschirhart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
LAST RESOURCE DISASTER ROUTING IN A TELECOMMUNICATIONS NETWORK
- Publication number 20180288828
- Publication date Oct 4, 2018
- LEVEL 3 COMMUNICATIONS, LLC
- Claudia M. Combellas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
VIRTUAL SERVICE CONTROL POINT IN A NETWORK
- Publication number 20180198689
- Publication date Jul 12, 2018
- LEVEL 3 COMMUNICATIONS, LLC
- Richard Dean Terpstra
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
CARRIER IDENTIFICATION CODE DELIVERY TO AN EGRESS NETWORK OF A TELE...
- Publication number 20180123949
- Publication date May 3, 2018
- LEVEL 3 COMMUNICATIONS, LLC
- David A. Tschirhart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND SYSTEM FOR ROUTING OF INBOUND TOLL-FREE COMMUNICATIONS
- Publication number 20170078495
- Publication date Mar 16, 2017
- LEVEL 3 COMMUNICATIONS, LLC
- David A. Tschirhart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ENTERPRISE TOLL-FREE CALL ROUTING
- Publication number 20160182980
- Publication date Jun 23, 2016
- LEVEL 3 COMMUNICATIONS, LLC
- David A. Tschirhart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
VIRTUAL SERVICE CONTROL POINT IN A NETWORK
- Publication number 20150296436
- Publication date Oct 15, 2015
- LEVEL 3 COMMUNICATIONS, LLC
- Richard Dean Terpstra
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
CENTRAL SERVICES HUB FOR A TELECOMMUNICATIONS NETWORK
- Publication number 20140079206
- Publication date Mar 20, 2014
- LEVEL 3 COMMUNICATIONS, LLC
- Richard Dean Terpstra
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

David Allen Tschirhart

Person

Patents Grantslast 30 patents

Method and system for routing of inbound toll-free communications

Carrier identification code delivery to an egress network of a tele...

Method and system for routing of inbound toll-free communications

Carrier identification code delivery to an egress network of a tele...

Last resource disaster routing in a telecommunications network

Enterprise toll-free call routing

Last resource disaster routing in a telecommunications network

Virtual service control point in a network

Method and system for routing of inbound toll-free communications

Enterprise toll-free call routing

Virtual service control point in a network

Central services hub for a telecommunications network

Patents Applicationslast 30 patents

METHOD AND SYSTEM FOR ROUTING OF INBOUND TOLL-FREE AND TOLLED COMMU...

METHOD AND SYSTEM FOR ROUTING OF INBOUND TOLL-FREE COMMUNICATIONS

CARRIER IDENTIFICATION CODE DELIVERY TO AN EGRESS NETWORK OF A TELE...

IMPROVED METHOD AND SYSTEM FOR ROUTING OF INBOUND TOLL-FREE COMMUNI...

CARRIER IDENTIFICATION CODE DELIVERY TO AN EGRESS NETWORK OF A TELE...

METHOD AND SYSTEM FOR ROUTING OF INBOUND TOLL-FREE COMMUNICATIONS

LAST RESOURCE DISASTER ROUTING IN A TELECOMMUNICATIONS NETWORK

METHOD AND SYSTEM FOR ROUTING OF INBOUND TOLL-FREE COMMUNICATIONS

ENTERPRISE TOLL-FREE CALL ROUTING

LAST RESOURCE DISASTER ROUTING IN A TELECOMMUNICATIONS NETWORK

VIRTUAL SERVICE CONTROL POINT IN A NETWORK

CARRIER IDENTIFICATION CODE DELIVERY TO AN EGRESS NETWORK OF A TELE...

METHOD AND SYSTEM FOR ROUTING OF INBOUND TOLL-FREE COMMUNICATIONS

ENTERPRISE TOLL-FREE CALL ROUTING

VIRTUAL SERVICE CONTROL POINT IN A NETWORK

CENTRAL SERVICES HUB FOR A TELECOMMUNICATIONS NETWORK