Patents by Inventor James Cyril Alexander Lewis

James Cyril Alexander Lewis 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).

  • Working fluids for electrophoretic image display devices
    Patent number: 4093534
    Abstract: The invention provides a working fluid for an electrophoretic image display device including a dispersion of a species of finely divided particles of an opaque dielectric material suspended in a suspension medium, each of the said particles which are transportable within the suspension medium under the influence of an electric field, has a chemical compound adsorbed on the surface thereof, the chemical compound is such that the molecules thereof exert an attractive force towards each other in the absence of the electric field.
    Type: Grant
    Filed: February 5, 1975
    Date of Patent: June 6, 1978
    Assignee: Plessey Handel und Investments AG
    Inventors: Christopher Frederick Carter, Roy Trevor Blunt, James Cyril Alexander Lewis, Geoffrey Michael Garner