Patents by Inventor Robert A. La Rossa

Robert A. La Rossa 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).

  • Heat developable photographic material and process
    Patent number: 4168980
    Abstract: A heat developable photographic material comprising, in reactive association, (a) photosensitive silver halide, with (b) an image-forming combination comprising (i) a silver imidazoline-2-thione wherein the imidazoline-2-thione portion is a 1-methyl, 1-ethyl or 1-phenyl-4-imidazoline-2-thione, with (ii) an organic, silver halide developing agent and (c) a binder, can provide developed and stabilized images without the need for processing solutions or baths. An image can be developed and stabilized in this material by merely heating the material to moderately elevated temperatures after imagewise exposure. Other addenda employed in heat developable photographic silver halide materials can be employed with the heat developable photographic materials described.
    Type: Grant
    Filed: August 19, 1977
    Date of Patent: September 25, 1979
    Assignee: Eastman Kodak Company
    Inventor: Robert A. La Rossa