Werner Ulrich

Follow

Person

Glen Ellyn, IL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Control of prepaid balance status notification
- Patent number 7,991,131
- Issue date Aug 2, 2011
- Alcatel-Lucent USA Inc.
- William Dale Bartter
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Internet protocol telephony
- Patent number 6,683,871
- Issue date Jan 27, 2004
- Lucent Technologies Inc.
- Chinmei Chen Lee
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Directory assistance systems
- Patent number 4,979,206
- Issue date Dec 18, 1990
- AT&T Bell Laboratories
- Frederick W. Padden
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Integrated packetized voice and data switching system
- Patent number 4,958,341
- Issue date Sep 18, 1990
- AT&T Bell Laboratories
- Jayant G. Hemmady
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Integrated packetized voice and data switching system
- Patent number 4,872,160
- Issue date Oct 3, 1989
- American Telephone and Telegraph Company, AT&T Bell Laboratories
- Jayant G. Hemmady
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Defective short holding-time trunk identifying method
- Patent number 4,371,758
- Issue date Feb 1, 1983
- Bell Telephone Laboratories, Incorporated
- Werner Ulrich
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Control of prepaid balance status notification
- Publication number 20080171529
- Publication date Jul 17, 2008
- LUCENT TECHNOLOGIES INC.
- William Dale Bartter
- G06 - COMPUTING CALCULATING COUNTING