Multi-Tech Patents

Privately held, Multi-Tech Systems has over NaN U.S. patents and numerous international patents. The company's intellectual property portfolio includes patents covering transmission of multiplexed voice, data and video packets used in technologies such as Internet telephony, PC telephony, voice over IP or frame relay, and DSVD modems.

Utility Patents

Number	Title	Date

5,268,934	Asynchronous-to-synchronous converter	December 7, 1993

5,301,274	Method and apparatus for automatic balancing of modem resources	April 5, 1994

5,309,562	Method and apparatus for establishing protocol spoofing from a modem	May 3, 1994

5,355,365	Intelligent local area network modem node	October 11, 1994

5,379,327	Synchronous-to-asynchronous converter	January 3, 1995

5,450,425	Protocol for communication of a data packet	September 12, 1995

5,452,289	Computer-based multifunction personal communications system	September 15, 1995

5,453,986	Dual port interface for a computer-based multifunction personal communication system	September 26, 1995

5,471,470	Computer-based multifunction personal communications system	November 28, 1995

5,500,859	Voice and data transmission system	March 19, 1996

5,535,204	Ringdown and ringback signalling for a computer-based multifunction personal communications system	July 9, 1996

5,546,395	Dynamic selection of compression rate for a voice compression algorithm in a voice over data modem	August 13, 1996

5,546,448	Apparatus and method for a caller ID modem interface	August 13, 1996

5,559,793	Echo cancellation system and method	September 24, 1996

5,574,725	Communication method between a personal computer and communication module	November 12, 1996

5,577,041	Method of controlling a personal communication system	November 19, 1996

5,592,586	Voice compression system and method	January 7, 1997

5,600,649	Digital simultaneous voice and data modem	February 4, 1997

5,617,423	Voice over data modem with selectable voice compression	April 1, 1997

5,619,508	Dual port interface for a computer-based multifunction personal communication system	April 8, 1997

5,628,030	Virtual modem driver apparatus and method	May 6, 1997

5,644,594	Power-conserving modem	July 1, 1997

5,673,257	Computer-based multifunction personal communication system	September 30, 1997

5,673,268	Modem resistant to cellular dropouts	September 30, 1997

5,680,553	High-speed transfer of data between a PC compatible microcomputer and a bus device	October 21, 1997

5,682,386	Data/voice/fax compression multiplexer	October 28, 1997

5,724,356	Advanced bridge/router local area network modem node	March 3, 1998

5,754,589	Noncompressed voice and data communication over modem for a computer-based multifunction personal communications system	May 19, 1998

5,757,801	Advanced priority statistical multiplexer	May 26, 1998

5,764,627	Method and apparatus for a hands-free speaker phone	June 9, 1998

5,790,532	Voice over video communication system	August 4, 1998

5,809,068	PCMCIA modem	September 15, 1998

5,812,534	Voice over data conferencing for a computer-based personal communications system	September 22, 1998

5,815,503	Digital simultaneous voice and data mode switching control	September 29, 1998

5,815,567	Communications interface providing isolation and ringdown features	September 29, 1998

5,864,560	Method and apparatus for mode switching in a voice over data computer-based personal communications system	January 26, 1999

5,905,794	Caller identification interface using line reversal detection	May 18, 1999

6,009,082	Computer-based multifunction personal communication system with caller ID	December 28, 1999

6,012,113	Method for connecting a plurality of communication applications with an actual communication port by emulating a plurality of virtual modems	January 4, 2000

6,031,867	Modem with firmware upgrade feature	February 29, 2000

6,091,737	Remote communications server system	July 18, 2000

6,151,333	Data/voice/fax compression multiplexer	November 21, 2000

6,219,708	System for network resource management	April 17, 2001

6,275,502	Advanced priority statistical multiplexer	August 14, 2001

6,341,143	Modem with firmware upgrade feature	January 22, 2002

6,359,894	Remote communications server system	March 19, 2002

6,442,248	System for providing analog and digital telephone functions using a single telephone line	August 27, 2002

6,515,984	Data/voice/fax compression multiplexer	February 4, 2003

6,526,092	Modem with firmware upgrade feature	February 25, 2003

6,563,821	Channel bonding in a remote communications server system	May 13, 2003

6,570,891	Advanced priority statistical multiplexer	May 27, 2003

6,700,955	System and method for remote management of a DSL device	March 2, 2004

5,764,628	Dual port interface for communication between a voice-over-data system and a conventional voice system	June 9, 1998

6,928,108	Modem with firmware upgrade feature	August 9, 2005

Design Patents

Number	Title	Date

D341,570	Desk top computer housing	November 23, 1993

D353,144	Case for a portable modem	December 6, 1994

D353,598	Desk top modem chassis	December 20, 1994

D355,653	Combined telephone and modem case for a computer-based multifunction communications system	February 21, 1995

D355,658	Modem Apparatus	February 21, 1995

D361,764	Combined telephone and modem case for a computer-based multifunction communications system	August 29, 1995

D364,377	Peripheral connector	November 21, 1995

D374,222	Case for data/voice/fax concentrator	October 1, 1996

D394,250	Icon for a display screen	May 12, 1998

D394,864	Peripheral connector	June 2, 1998

Intellectual Patents

Number	Title	Date

H2,065	Proxy server	May 6, 2003

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Copyright © 1995-2008 by Multi-Tech Systems, Inc. All rights reserved. This document was last modified on: 27 March 2008 11:37:31 AM Mounds View, MN - U.S.A.