Patents by Inventor Roger C. Clapp

Roger C. Clapp 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).

  • Camera with two position strobe
    Patent number: 4734733
    Abstract: A photographic camera having a source of artificial illumination mounted for automatic movement from a first operative fill flash position to a second operative position. In its second position, the intensity of its illumination is greater than in the first position and its axis of illumination is spaced further away from the camera's objective lens axis than in the first position.
    Type: Grant
    Filed: September 21, 1987
    Date of Patent: March 29, 1988
    Assignee: Polaroid Corporation
    Inventors: Roger C. Clapp, George D. Whiteside
  • Hardener in carrier layer
    Patent number: 4241171
    Abstract: A process for making a photographic product in which a plurality of liquid layers are coated on a base, comprising the steps of coating as the first layer adjacent the base a carrier layer containing a photographic hardener and coating as the second layer adjacent the first layer an isolation layer. The product is completed by coating a plurality of conventional photographic compositions over the first two layers and drying.
    Type: Grant
    Filed: February 21, 1979
    Date of Patent: December 23, 1980
    Assignee: Polaroid Corporation
    Inventors: Roger C. Clapp, Edward J. Choinski