Patents by Inventor Darrell C. Burman

Darrell C. Burman 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).

  • Image transfer sheet material
    Patent number: 3975563
    Abstract: Sheet materials are provided which are useful in preparing negative transparencies for use with overhead projectors. Methods for obtaining image transfer and preparation of transparencies are also provided.
    Type: Grant
    Filed: May 8, 1974
    Date of Patent: August 17, 1976
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Victor R. Franer, Darrell C. Burman