Karl Henderson

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Highand Village, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Calling card having an associated pre-recorded personal greeting
- Patent number 8,130,914
- Issue date Mar 6, 2012
- Verizon Patent and Licensing Inc.
- James Duke Bond
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Prepaid telephone calling card with message recording capability
- Patent number 7,180,990
- Issue date Feb 20, 2007
- MCI, LLC
- Karl M. Henderson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Pre-paid telephone calling card having an associated pre-recorded p...
- Patent number 7,145,989
- Issue date Dec 5, 2006
- MCI, Inc.
- James Duke Bond
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Pre-paid telephone calling card linked to a stored value account
- Patent number 6,507,644
- Issue date Jan 14, 2003
- WorldCom, Inc.
- Karl Henderson
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Preferred billing rate pre-paid telephone calling card
- Patent number 6,404,869
- Issue date Jun 11, 2002
- WorldCom, Inc.
- Karl Henderson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system for automated customer services
- Patent number 6,327,363
- Issue date Dec 4, 2001
- MCI WorldCom, Inc.
- Karl M. Henderson
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
PRE-PAID TELEPHONE CALLING CARD HAVING AN ASSOCIATED PRE-RECORDED P...
- Publication number 20070121842
- Publication date May 31, 2007
- MCI, LLC.
- James Duke Bond
- H04 - ELECTRIC COMMUNICATION TECHNIQUE