Patents by Inventor Robert J. Nangeroni

Robert J. Nangeroni 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).

  • Pliant shield for protecting photographic processing liquid from ambient atmosphere
    Patent number: 4607928
    Abstract: A film processing liquid in a reservoir is covered with a pliant apron or shield which is adapted to substantially conform to the surface of the liquid to prevent the latter from being adversely affected by the ambient atmosphere during the time that the liquid is expelled from a container and is withdrawn from the reservoir.
    Type: Grant
    Filed: June 3, 1985
    Date of Patent: August 26, 1986
    Assignee: Polaroid Corporation
    Inventor: Robert J. Nangeroni