Patents by Inventor Bruce E. Kahn

Bruce E. Kahn 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 comprising a mixture of sensitizing dyes
    Patent number: 6140035
    Abstract: A photographic element comprises at least one silver halide emulsion layer in which:a) the silver halide has been spectrally sensitized with a first blue sensitizing dye having a .lambda..sub.1 less than or equal to about 475 nm and a second blue sensitizing dye having a .lambda..sub.2, wherein the following relationship is met: ##EQU1## wherein .lambda..sub.1 is the wavelength in nanometers (nm) of maximum absorption of a silver halide emulsion sensitized with the first dye and .lambda..sub.2 is the wavelength of maximum absorption of a silver halide emulsion sensitized with the second dye, with the proviso that neither the first nor the second dye contains selenium. The silver halide emulsion of said layer is chemically sensitized with a gold(I) compound and preferably with the combination of a gold compound and a disulfide compound; andb) the silver halide has been chemically sensitized with a gold compound of formula (I):AuL.sub.2 +X.sup.- or AuL(L.sup.1)+X.sup.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: October 31, 2000
    Assignee: Eastman Kodak Company
    Inventors: Karen J. Klingman, Bruce E. Kahn, Richard L. Parton, Thomas R. Dobles, David A. Stegman, Teresa A. Smith, John D. Lewis
  • Combined squeeze type eye wash device and sealing cap therefor
    Patent number: D248448
    Type: Grant
    Filed: April 22, 1976
    Date of Patent: July 11, 1978
    Assignee: Bel -Art Products, Inc.
    Inventors: George R. McClure, Bruce E. Kahn