Patents by Inventor Joseph Rossi

Joseph Rossi 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).

  • Photographic elements containing new magenta dye-forming couplers
    Patent number: 5670302
    Abstract: A photographic element comprises a light sensitive silver halide emulsion layer having associated therewith a magenta coupler represented by formula (I): ##STR1## wherein: R.sub.1 represents a hydrogen atom or an alkyl group;R.sub.2 represents an alkyl group;Ar represents a phenyl or naphthyl group;X represents a substituent and "n" represents an integer of from 1 to 5; andZ represents a hydrogen atom or a group which can be split off by the reaction of the coupler with an oxidized color developing agent.The described naphtholic coupler provides a magenta dye image rather than the cyan dye image common to naphtholic couplers.
    Type: Grant
    Filed: June 16, 1996
    Date of Patent: September 23, 1997
    Assignee: Eastman Kodak Company
    Inventors: Philip T. S. Lau, Louis Joseph Rossi, Stanley Wray Cowan