Patents by Inventor David W. Satchell

David W. Satchell 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).

  • Infra-red detector
    Patent number: 4575631
    Abstract: An infra-red detector or sensor comprises a wafer (11) of single crystal silicon in one surface of which pyramidal pits (12) forming a two-dimensional array are etched. The pits form horn aerial elements whereby radiant energy is directed to bolometers (14) one disposed at the throat of each horn.
    Type: Grant
    Filed: August 13, 1984
    Date of Patent: March 11, 1986
    Assignee: International Standard Electric Corporation
    Inventor: David W. Satchell
  • Method and apparatus for forming visible images
    Patent number: 4175836
    Abstract: A method and apparatus for causing coloration of an electrochromic material includes passing through the material an electrical pulse above a coloration threshold potential for the material and of a predetermined polarity and subsequently applying a D. C. potential of the same polarity to the material of a magnitude less than the threshold potential.
    Type: Grant
    Filed: April 4, 1977
    Date of Patent: November 27, 1979
    Assignee: Xerox Corporation
    Inventors: Michael J. Redman, David W. Satchell
  • Transceiver system for visible images
    Patent number: 4121260
    Abstract: A transceiver system is provided which selectively applies electrical potentials representative of graphical information to a stylus scanning a layer of electrochromic material thereby causing selective coloration of the materials.
    Type: Grant
    Filed: April 4, 1977
    Date of Patent: October 17, 1978
    Assignee: Xerox Corporation
    Inventors: Malcolm Stuart Dye, Michael James Redman, David W. Satchell