Patents by Inventor Franco Leoncini

Franco Leoncini 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).

  • Silver halide photographic elements containing biocides
    Patent number: 5482820
    Abstract: There is disclosed a light-sensitive silver halide photographic element comprising at least one hydrophilic colloid layer containing a dihalogenonitriloacylamino compound in combination with a phenolic biocide.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: January 9, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Luigi Cellone, Franco Leoncini