Patents by Inventor Andrew S. Craig

Andrew S. Craig 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).

  • Publication number: 20040224932
    Abstract: There is provided a crystalline chemical composition comprising a compound of formula (I) 1
    Type: Application
    Filed: June 8, 2004
    Publication date: November 11, 2004
    Inventors: Keith Biggadike, Steven John Coote, Andrew S. Craig, Victor Jacewicz, Michael J. Millan, Rosalyn K. Nice, Brian M. Noga, John F. Seager, Andrew L. Theophilus, David M. Crowe
  • Patent number: 6777399
    Abstract: There is provided a crystalline chemical composition comprising a compound of formula (I) in which the crystal lattice is stabilized by the presence of a guest molecule, characterized in the crystalline composition is of space group P212121 having unit cell dimensions of about 12.1±0.6 Å, 14.9±0.7 Å, and 16.2±0.8 Å when determined at either 120K or 150K.
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: August 17, 2004
    Assignee: SmithKline Beecham Corporation
    Inventors: Keith Biggadike, Steven John Coote, Andrew S. Craig, Victor W Jacewicz, Michael J. Millan, Rosalyn K. Nice, Brian M Noga, John F. Seager, Andrew L. Theophilus, David M. Crowe
  • Publication number: 20030153542
    Abstract: There is provided a crystalline chemical composition comprising a compound of formula (I) 1
    Type: Application
    Filed: February 4, 2002
    Publication date: August 14, 2003
    Inventors: Keith Biggadike, Steven John Coote, Andrew S. Craig, Victor W. Jacewicz, Michael J. Millan, Rosalyn K. Nice, Brian M. Noga, John F. Seager, Andrew L. Theophilus, David M. Crowe
  • Patent number: 6346371
    Abstract: The invention provides a photographic element comprising at least one emulsion layer comprising at least 50 mol % silver chloride, which layer comprises at least one DIR coupler in association with at least one image dye-forming coupler, characterised in that the relative reactivity ratio krel of at least one DIR coupler and an associated image coupler is less than or equal to 1.0, wherein krel=k1/k2; k1=the second order rate constant for the reaction of DIR coupler with oxidised developer and k2=the second order rate constant for the reaction of image coupler with oxidised developer. The DIR couplers when associated with image couplers such that the above condition is satisfied efficiently reduce development of silver halide emulsions containing at least 50 mol % silver chloride, there being a reduction in contrast providing a linear sensitometric curve over a good latitude with negligible speed penalty.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: February 12, 2002
    Assignee: Eastman Kodak Company
    Inventors: Andrew S. Craig, Richard P. Szajewski