Patents by Inventor C. David Dow

C. David Dow 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).

  • Dual 4-wire analog data multiplexer
    Patent number: 5691718
    Abstract: An improved method and apparatus for transmission of dual 4-wire analog data services between a telephone company location and a subscriber premises over a single twisted pair, providing a 4:1 pair gain. In a preferred embodiment the invention provides for method and apparatus for transmission of multiple analog data signals for dual 4-wire analog data services over a single twisted pair from telephone company equipment to a subscriber, using 2B1Q or 4B3T digital signals.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 25, 1997
    Assignee: Raychem Corporation
    Inventors: Nicholas A. Balatoni, Tom Blackburn, C. David Dow