Patents by Inventor David C. Gliottone

David C. Gliottone 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: 6326134
    Abstract: A process for forming a silver halide photographic emulsion is disclosed comprising precipitating silver halide grains in an aqueous dispersing medium to which has been added silver and halide salt solutions while agitating the dispersing medium, wherein the precipitation is done in the presence of an antifoamant compound of the formula RO(CH2CH2O)nH wherein R represents an alkyl or alkenyl group containing 10 to 25 carbon atoms, or mixtures thereof, and n represents a mean value of from 2 to 4. The antifoamant material may be delivered to the aqueous dispersing medium as a small particle dispersion, made with the same peptizer used for manufacturing the emulsion or another stabilizer. A further embodiment of the invention is directed towards a silver halide photographic material comprising a support upon which is coated at least one light sensitive silver halide emulsion layer, comprising a silver halide emulsion precipitated in accordance with the described process.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: December 4, 2001
    Assignee: Eastman Kodak Company
    Inventors: Lloyd A. Lobo, Sridhar Sadasivan, John W. Boettcher, Seshadri Jagannathan, Jerzy A. Budz, David C. Gliottone
  • Patent number: 6303284
    Abstract: A process for forming a silver halide photographic emulsion is disclosed comprising precipitating silver halide grains in an aqueous dispersing medium to which has been added silver and halide salt solutions while agitating the dispersing medium, wherein the precipitation is done in the presence of an antifoamant which comprises a hydrophobic group containing nonionic mono- or di-saccharide compound having an HLB number of between 2 and 12. The antifoamant material may be delivered to the aqueous dispersing medium as a small particle dispersion, made with the same peptizer used for manufacturing the emulsion or another stabilizer. A further embodiment of the invention is directed towards a silver halide photographic material comprising a support upon which is coated at least one light sensitive silver halide emulsion layer, comprising a silver halide emulsion precipitated in accordance with the described process.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: October 16, 2001
    Assignee: Eastman Kodak Company
    Inventors: Lloyd A. Lobo, Sridhar Sadasivan, Seshadri Jagannathan, Jerzy A. Budz, David C. Gliottone, John W. Boettcher