Membership
Tour
Register
Log in
Michael C. Kirchner
Follow
Person
Cedar Rapids, IA, US
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Systems and methods for receiving telephone calls via instant messa...
Patent number
8,553,857
Issue date
Oct 8, 2013
Verizon Business Global LLC
Joel Hanson
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Virtual PBX system
Patent number
7,496,091
Issue date
Feb 24, 2009
Verizon Business Global LLC
Thomas J. Galvin
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Systems and methods for receiving telephone calls via instant messa...
Patent number
7,274,778
Issue date
Sep 25, 2007
Verizon Business Global LLC
Joel Hanson
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Virtual PBX system
Patent number
6,775,272
Issue date
Aug 10, 2004
MCI, Inc.
Thomas J. Galvin
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Virtual PBX system
Patent number
6,724,754
Issue date
Apr 20, 2004
WorldCom, Inc.
Thomas J. Galvin
Information
Patent Grant
Systems and methods for receiving telephone calls via instant messa...
Patent number
6,697,474
Issue date
Feb 24, 2004
WorldCom, Inc.
Joel Hanson
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Virtual PBX system
Patent number
6,393,017
Issue date
May 21, 2002
WorldCom, Inc.
Thomas J. Galvin
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Virtual second line hybrid network communication system
Patent number
6,351,464
Issue date
Feb 26, 2002
MCI WorldCom, Inc.
Tom J. Galvin
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
TCP/IP-based client interface to network information distribution s...
Patent number
6,263,370
Issue date
Jul 17, 2001
MCI Communications Corporation
Michael C. Kirchner
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Protocol extension in NSPP using an acknowledgment bit
Patent number
5,745,685
Issue date
Apr 28, 1998
MCI Communications Corporation
Michael Kirchner
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
System and method for accessing a service on a services network
Patent number
5,706,437
Issue date
Jan 6, 1998
MCI Communications Corporation
Michael Kirchner
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
SYSTEMS AND METHODS FOR RECEIVING TELEPHONE CALLS VIA INSTANT MESSA...
Publication number
20070230673
Publication date
Oct 4, 2007
VERIZON BUSINESS GLOBAL LLC
Joel Hanson
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Virtual PBX system
Publication number
20040160951
Publication date
Aug 19, 2004
WorldCom, Inc.
Thomas J. Galvin
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Systems and methods for receiving telephone calls via instant messa...
Publication number
20040161089
Publication date
Aug 19, 2004
Joel Hanson
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Virtual PBX system
Publication number
20020114329
Publication date
Aug 22, 2002
WorldCom, INC.
Thomas J. Galvin
H04 - ELECTRIC COMMUNICATION TECHNIQUE