Patents by Inventor Herbert J. Pennicott

Herbert J. Pennicott 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).

  • Oxidative imaging
    Patent number: 4769459
    Abstract: A radiation-sensitive element capable of recording an image upon image-wise exposure to radiation of selected wavelength, the element comprising, as the image-forming components, an effective amount of a bleachable dye in reactive association with an iodonium ion. Suitable dyes include polymethine dyes having an oxidation potential between 0 and +1 volt.
    Type: Grant
    Filed: November 3, 1986
    Date of Patent: September 6, 1988
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Ranjan C. Patel, Ian J. Ferguson, Herbert J. Pennicott
  • Oxidative imaging
    Patent number: 4701402
    Abstract: A radiation-sensitive element capable of recording an image upon image-wise exposure to radiation of selected wavelength, the element comprising, as the image-forming components, an effective amount of a bleachable dye in reactive association with an iodonium ion. Suitable dyes include polymethine dyes having an oxidation potential between 0 and +1 volt.
    Type: Grant
    Filed: December 30, 1985
    Date of Patent: October 20, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Ranjan C. Patel, Ian J. Ferguson, Herbert J. Pennicott