Patents by Inventor Aldo Sgarbi

Aldo Sgarbi 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).

  • Negative-acting silver halide photographic elements having extended UV exposure latitude
    Patent number: 5316901
    Abstract: UV-sensitive negative acting silver halide photographic elements for contact processes which can be safely handled under white light and have increased UV exposure latitude, said elements comprising a support base, a hydrophilic colloidal silver halide emulsion layer comprising UV sensitive negative acting silver halide grains, and one or more hydrophilic colloidal layers, wherein said silver halide emulsion is reactively associated with a water-removable UV-absorbing compound having at least 80% of the absorption in the range from 350 to 400 micronmeter.
    Type: Grant
    Filed: July 13, 1992
    Date of Patent: May 31, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Alberto Vacca, Aldo Sgarbi