Patents by Inventor Joseph J. Sheeto, Jr.

Joseph J. Sheeto, Jr. 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).

  • Formation of silver halide grains in the presence of thioureas
    Patent number: 4221863
    Abstract: A silver halide emulsion which is useful in photography is described. The silver halide grains are characterized by uniform and increased grain size and uniform crystal habit when a compound containing the .dbd.N--C(.dbd.S)--N.dbd. moiety is present during the formation of the grains in the precipitation and/or the ripening steps.
    Type: Grant
    Filed: March 31, 1978
    Date of Patent: September 9, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Joseph D. Overman, Joseph J. Sheeto, Jr.