Patents by Inventor Andrew Martin Rober Ward

Andrew Martin Rober Ward 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).

  • Cables
    Patent number: 6596943
    Abstract: A cable 2 has an outer sheath on which a layer of selectively activatable material such as a layer of thick-film conductive polymer is sprayed to form a resistive element. A layer of thermochromic ink is printed on top of this. Electric current passed through the resistive element provides heating to the ink and causes it to warm and change color.
    Type: Grant
    Filed: April 20, 1999
    Date of Patent: July 22, 2003
    Assignee: AT&T Laboratories-Cambridge Ltd.
    Inventor: Andrew Martin Rober Ward