Patents by Inventor David M. Niklewicz

David M. Niklewicz 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 element and process comprising a development inhibitor releasing coupler and a yellow dye-forming coupler
    Patent number: 5288594
    Abstract: A combination of a development inhibitor releasing coupler having a particular releasable mercaptotetrazole group; a concentration within the range of 2.5 to 25 mg/m.sup.2, that does not accelerate bleaching of the element upon exposure and processing, of a dye-forming naphtholic or acetanilide coupler comprising a coupling-off group represented by the formula ##STR1## as described in the specification, with a particular alkoxy-benzoyl yellow dye-forming coupler also as described in the specification in a photographic silver halide element and process enables improved dye images upon exposure and processing.
    Type: Grant
    Filed: March 26, 1993
    Date of Patent: February 22, 1994
    Assignee: Eastman Kodak Company
    Inventors: Joseph W. Manthey, David M. Niklewicz, Richard P. Szajewski