Patents by Inventor Katie E. Smith

Katie E. Smith 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 couplers having improved image dye light stability
    Patent number: 6699650
    Abstract: There is provided a photographic element comprising at least one silver halide emulsion layer having associated therewith a novel phenolic cyan dye-forming coupler of formula (I) wherein X is hydrogen or a group that can be split off by the reaction of the coupler with an oxidised colour developing agent, and one of Y and Z is the group  wherein each R is independently an unsubstituted or substituted alkyl or aryl group or a 5-10 membered heterocyclic ring which contains one or more heteroatoms selected from nitrogen, oxygen and sulfur, which ring is unsubstituted or substituted; R1 is hydrogen or an unsubstituted or substituted alkyl or aryl group, R2 is an unsubstituted or substituted alkyl or aryl group or a 5-10 membered heterocyclic ring which contains one or more heteroatoms selected from nitrogen, oxygen and sulfur, which ring is unsubstituted or substituted; R3 is hydrogen or an unsubstituted or substituted alkyl or aryl group, n is 1 or 2, and the othe
    Type: Grant
    Filed: May 22, 2001
    Date of Patent: March 2, 2004
    Assignee: Eastman Kodak Company
    Inventors: David Clarke, Llewellyn J. Leyshon, Katie E. Smith
  • Photographic element containing cyan dye-forming coupler
    Patent number: 6444417
    Abstract: The invention relates to a photographic element comprising a light sensitive silver halide emulsion layer having associated therewith (A) a cyan dye-forming coupler of formula (I) and (B) a bisphenol derivative compound of formula (II): wherein the substituents are as described in the specification.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: September 3, 2002
    Assignee: Eastman Kodak Company
    Inventors: David Clarke, Llewellyn J. Leyshon, Katie E. Smith
  • Photographic element containing cyan dye-forming coupler
    Publication number: 20020064735
    Abstract: The invention relates to a photographic element comprising a light sensitive silver halide emulsion layer having associated therewith (A) a cyan dye-forming coupler of formula (I) and (B) a bisphenol derivative compound of formula (II): 1
    Type: Application
    Filed: August 21, 2001
    Publication date: May 30, 2002
    Applicant: Eastman Kodak Company
    Inventors: David Clarke, Llewellyn J. Leyshon, Katie E. Smith