Patents by Inventor David F. Kopperl

David F. Kopperl 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).

  • Apparatus including sulfur bulb for accelerating fading of light sensitive materials
    Patent number: 6586756
    Abstract: An apparatus for subjecting light sensitive materials to visible radiation is disclosed which minimizes the amount of heat generated. The apparatus includes a source of visible radiation including at least one microwave energy responsive sulfur bulb and applies microwave energy to the sulfur bulb to cause the sulfur bulb to emit visible light. The apparatus further includes a holder defining a surface for receiving light sensitive materials located relative to the microwave energy responsive sulfur bulb. A light diffusing assembly is disposed relative to the sulfur bulb and responsive to the visible light emitted by the sulfur bulb to illuminate light sensitive materials received by the holder with diffused uniform visible light.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: July 1, 2003
    Assignee: Eastman Kodak Company
    Inventors: David F. Kopperl, Howard C. Brayman
  • Method for improving the archival properties of processed photographic film in a storage assembly for achieving the same
    Patent number: 5215192
    Abstract: A method for improving the archival properties of a processed photographic film and a storage assembly for achieving the same by placing the film in a sealed container together with molecular sieve zeolites.
    Type: Grant
    Filed: October 16, 1992
    Date of Patent: June 1, 1993
    Assignee: Eastman Kodak Company
    Inventors: Arunachalam T. Ram, Carl F. Holtz, Richard C. Sehlin, David F. Kopperl