Patents by Inventor Edward G. Spencer

Edward G. Spencer 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).

  • Computing apparatus comprising a programmable resistor
    Patent number: 4782460
    Abstract: Computing apparatus (e.g., a neural network) advantageously comprises a programmable resistor body comprising typically a multiplicity of resistors R.sub.ij. The resistance of any given R.sub.ij is changeable from a relatively high resistance to a lower resistance by application of an appropriate electrical signal, and can be reset to a higher resistance by application of an appropriate signal of reverse polarity. Exemplarily, a programmable resistor body comprises a thin layer of bismuth oxide or strontium barium niobate.
    Type: Grant
    Filed: April 6, 1987
    Date of Patent: November 1, 1988
    Assignee: American Telephone and Telegraph Company, AT&T Bell Laboratories
    Inventor: Edward G. Spencer
  • Tungsten niobate electrochromic device
    Patent number: 4225216
    Abstract: Disclosed is an electro-optical device in which color changes are electrically induced in an electrochromic material which is a single or polycrystalline niobium tungstate represented approximately by the formula W.sub.9 Nb.sub.8 O.sub.47. The device comprises an ion source and a source of an electrical field which may be reversible so as to produce coloring and bleaching of the electrochromic material. Due to high corrosion resistance of such material, the ion source may conveniently be a hydrous electrolyte.
    Type: Grant
    Filed: February 21, 1979
    Date of Patent: September 30, 1980
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Gary D. Boyd, Ross A. Lemons, James C. Phillips, Joseph P. Remeika, Edward G. Spencer