Patents by Inventor Edwin J. Hearn

Edwin J. Hearn 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).

  • Polariscope
    Patent number: 4523848
    Abstract: In a polariscope including first and second quarter wave plates arranged one on either side of a sample under test, first and second liquid crystal devices are provided adjacent the quarter wave plates and can be switched between two optical conditions to alter the polariscope between a plane polarized and a circularly polarized mode.
    Type: Grant
    Filed: September 24, 1982
    Date of Patent: June 18, 1985
    Assignee: National Research Development Corporation
    Inventors: Barry Gorman, Edwin J. Hearn