Patents by Inventor Colin H. Lewinton

Colin H. Lewinton 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).

  • Electrophotographic sheet material
    Patent number: 4283473
    Abstract: The present invention relates to an electrophotographic sheet material suitable for use as an offset printing master, comprising: a fibrous substrate, a continuous film of cellulose nitrate thereon and a layer of photo conductive material on said film.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: August 11, 1981
    Assignee: Domtar Inc.
    Inventors: Colin H. Lewinton, Joseph Savit
  • Fibrous electrophotographic sheet with a cellulose nitrate coating
    Patent number: 4271250
    Abstract: The present invention relates to an electrophotographic sheet material suitable for use as an offset printing master, comprising: a fibrous substrate, a continuous film of cellulose nitrate thereon and a layer of photo conductive material on said film.
    Type: Grant
    Filed: November 23, 1979
    Date of Patent: June 2, 1981
    Assignee: Domtar Inc.
    Inventors: Colin H. Lewinton, Joseph Savit