Patents by Inventor Dan Neuberger

Dan Neuberger 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: 4153459
    Abstract: Color photographic elements containing silver halide and incorporated colored and color-forming materials are described. These elements have (a) a layer containing a yellow dye or yellow dye precursor that is bleachable by a mild silver-dye-bleach procedure and (b) at least one other layer, spectrally sensitized to green light, which contains a color-forming coupler which forms magenta dye upon reaction with oxidized color developer. Such elements, when they are processed by a process have improved graininess and yield sharper images. The novel process comprises the steps:A. develop in black and white developer,B. apply non-fixing silver-dye-bleach solution,C. rinse,D. fog and color developE. washF. bleach and fix.A "positive" colored image results.
    Type: Grant
    Filed: December 1, 1975
    Date of Patent: May 8, 1979
    Assignee: Eastman Kodak Company
    Inventors: Dan Neuberger, Jon T. Staples
  • Patent number: 3933501
    Abstract: Color photographic elements containing silver halide and incorporated color-forming materials are described. These elements contain at least two differentially light-sensitive emulsion layers, the overlying layer being sensitive to the relatively shorter wavelengths and containing at least one yellow dye-forming color coupler which has the unusual ability to inhibit the reaction of competing couplers (such as citrazinic acid, for example) when competing couplers are used in color developing solutions in the conventional manner. Use of these couplers in the overlying (color) layer of multi-layer color photographic elements makes it possible to produce colored images having improved graininess.Couplers having this unusual capability are selected from those having the structures: ##SPC1##Wherein R.sub.1, R.sub.2 and R.sub.3 are as defined herein.
    Type: Grant
    Filed: June 10, 1974
    Date of Patent: January 20, 1976
    Assignee: Eastman Kodak Company
    Inventors: Robert G. Cameron, Dan Neuberger
  • Patent number: RE30211
    Abstract: Color photographic elements containing silver halide and incorporated color-forming materials are described. These elements contain at least two differentially light-sensitive emulsion layers, the overlying layer being sensitive to the relatively shorter wavelengths and containing at least one yellow dye-forming color coupler which has the unusual ability to inhibit the reaction of competing couplers (such as citrazinic acid, for example) when competing couplers are used in color developing solutions in the conventional manner. Use of these couplers in the overlying (color) layer of multi-layer color photographic elements makes it possible to produce colored images having improved graininess.Couplers having this unusual capability are selected from those having the .[.structures.]. .Iadd.structure .Iaddend. ##STR1## wherein R.sub.1, .Iadd.and .Iaddend.R.sub.2 .[.and R.sub.3 .]. are as defined herein.
    Type: Grant
    Filed: June 16, 1978
    Date of Patent: February 12, 1980
    Assignee: Eastman Kodak Company
    Inventors: Robert G. Cameron, Dan Neuberger