Patents by Inventor Mark G. Alexander

Mark G. Alexander has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Microprocessor controlled message handling system
    Patent number: 4390981
    Abstract: A message handling system includes a computer controlled message processor for use in network configurations to store and forward low-speed messages between long distance and international communicators. Its use is based on dial-up connections between network nodes. Each message handler unit includes a microprocessor, program and buffer storage memories, line multiplexing circuitry, modems and input/output peripheral devices. The message handler unit may comprise a 32 port system, 30 of which are used as input ports and two of which are used as high-speed output ports. A journal of all message numbers is maintained on a printer for complete message accountability.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: June 28, 1983
    Assignee: Syscom, Inc.
    Inventors: Leonard J. Wood, Balakrishna Parasuraman, Edwin H. Williams, Mark G. Alexander, Richard C. Montgomery, Jr.