Patents - Martin H. Graham
Circuit for measurement of electrical pollution on power line
Martin H. Graham
U.S. Patent 6,914,435. July 2005
Phase detection circuit
Martin H. Graham
U.S. Patent 6,690,151. February 2004
Method and apparatus for transmitting and receiving a symbol over POTS wiring using a multi-cycle waveform
Martin H. Graham, Harold H. Webber, Jr. and Matthew Taylor
U.S. Patent 6,678,321. January 2004
Biphasic multiple level storage method
Martin H. Graham
U.S. Patent 6,473,252. October 2002
Capacitor discharging circuit
Martin H. Graham
U.S. Patent 6,424,125. July 2002
Method and apparatus for decoding a bit sequence for transmission over POTS wiring
Martin H. Graham and Harold H. Webber, Jr.
U.S. Patent 6,246,718. June 2001
Voltage compensation circuit and method for reducing electric shocks to teats of an animal during its milking
Martin H. Graham
U.S. Patent 6,234,108. May 2001
Encoding/detection method for digital data transmitter with a signal having multiple levels
Howard W. Johnson and Martin H. Graham
U.S. Patent 6,031,472. February 2000
Encoding/detection method for digital data
Martin H. Graham
U.S. Patent 6,028,540. February 2000
Method and apparatus for encoding and decoding a bit sequence for transmission over POTS wiring
Martin H. Graham and Harold H. Webber, Jr.
U.S. Patent 5,963,595. October 1999
Circuit for preventing base line wander of digital signals in a network receiver
Martin H. Graham and Matthew Taylor
U.S. Patent 5,812,597. September 1998
Method and apparatus for time dependent data transmission
Martin H. Graham, Matthew Taylor, Mark Miller and Kevin Braun
U.S. Patent 5,696,790. December 1997
Common mode current cancellation in twisted pairs
Martin H. Graham and Matthew Taylor
U.S. Patent 5,587,692. December 1996
Flat cable to flat parallel wire cable
Charles M. Aden, Martin H. Graham, Matthew Taylor and Mark Miller
U.S. Patent 5,467,061. November 1995
Four-terminal resistor method for measuring electric current in cows
Martin H. Graham
U.S. Patent 5,465,051. November 1995
Enhanced collision detection for Ethernet network
Charles M. Aden and Martin H. Graham
U.S. Patent 5,450,594. September 1995
EMI suppression coding
Martin H. Graham
U.S. Patent 5,422,919. June 1995
Flat cable to flat parallel wire cable
Charles M. Aden, Martin H. Graham, Matthew Taylor and Mark Miller
U.S. Patent 5,379,005. January 1995
Network monitor and test apparatus
Martin H. Graham
U.S. Patent 5,365,515. November 1994
Network monitor and test apparatus
Martin H. Graham
U.S. Patent 5,347,225. September 1994
EMI suppression coding
Martin H. Graham
U.S. Patent 5,283,807. February 1994
Network monitor and test apparatus
Martin H. Graham
U.S. Patent 5,260,664. November 1993
Method and apparatus for power line communications
Martin H. Graham and Howard W. Johnson
U.S. Patent 5,257,006. October 1993
Apparatus and method for reducing errors in data caused by noise
Martin H. Graham, Howard W. Johnson, Philip H. Sutterlin, Chin-Chen Lee and Amy O. Hurlbut
U.S. Patent 5,210,518. May 1993
Local area network amplifier for twisted pair lines
Martin H. Graham, Anthony J. Ireland, Mark Miller and Matthew Taylor
U.S. Patent 5,191,300. March 1993
Apparatus and method for analyzing nucleic acid molecules
Thomas J. Conroy and Martin H. Graham
U.S. Patent 4,870,004. September 1989
Bus apparatus with a plurality of transmitters
Martin H. Graham
U.S. Patent 4,803,699. February 1989
Balun
Martin H. Graham
U.S. Patent 4,800,344. January 1989
Method and apparatus for transmission of digital data over a line
Martin H. Graham
U.S. Patent 4,752,940. June 1988
Balun
Martin H. Graham
U.S. Patent 4,717,896. January 1988
Time division multiplexed computerized branch exchange
Howard W. Johnson, Michael G. Duncan, Rod G. Sinks, John D. Edwards, Martin H. Graham, James M. Kasson and Charles M. Corbalis
U.S. Patent 4,627,050. December 1986
Low power consuming AC to DC converter
Martin H. Graham
U.S. Patent 4,600,982. July 1986
Dual tone multi frequency digital detector
Martin H. Graham and Enoch Callaway
U.S. Patent 4,484,035. November 1984
High speed ribbon cable bus
Martin H. Graham
U.S. Patent 4,445,048. April 1984
Inductively coupled sensing circuit and priority system
Martin H. Graham
U.S. Patent 4,411,004. October 1983
Transmitter/receiver for use on common cable communications system such as Ethernet
Martin H. Graham
U.S. Patent 4,320,520. March 1982
Signal injection technique
James M. Kasson and Martin H. Graham
U.S. Patent 4,187,466. February 1980
Spirometer
Martin H. Graham
U.S. Patent 3,797,479. March 1974
Electrocardiograph lead distribution and contact testing apparatus
Martin H. Graham
U.S. Patent 3,757,778. September 1973
Electron discharge device
Martin H. Graham
U.S. Patent 3,054,926. September 1962