Patents by Inventor Ronald Henry White

Ronald Henry White 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).

  • Patent number: 6277537
    Abstract: A photographic chrogenic and substantially dry dye-diffusion-transfer element is disclosed, wherein said element is activated by heat and comprises contacting dye-receiver and dye-donor layers and further comprises a layer which contains a thermal solvent according to formula (I) wherein Z1, Z2, Z3, Z4, and Z5 are substituents, the Hammet sigma paameters of Z2, Z3, and Z4 sum to at least −0.28 and less than 1.53; the calculated logP for I is greater than 3 and less than 10.
    Type: Grant
    Filed: December 6, 1991
    Date of Patent: August 21, 2001
    Assignee: Eastman Kodak Company
    Inventors: David Scott Bailey, Ronald Henry White, John Texter
  • Patent number: 5843618
    Abstract: An aqueous-developable chromogenic photographic heat-transferable non-aqueous dye-diffusion-transfer photographic element is disclosed, wherein said element comprises radiation sensitive silver halide, a dye-providing compound that forms or releases a heat-transferable image dye upon reaction of said compound with the oxidation product of a primary amine developing agent, a hydrophilic binder, and a thermal solvent for facilitating non-aqueous diffusion transfer according to formula (I) ##STR1## wherein AH is a hydrogen bond donating group with an aqueous pK.sub.a value for proton loss of greater than 6;L.sup.1 and L.sup.
    Type: Grant
    Filed: June 8, 1993
    Date of Patent: December 1, 1998
    Assignee: Eastman Kodak Company
    Inventors: David Scott Bailey, Ronald Henry White, John Texter