Patents by Inventor Detlev Kapitza

Detlev Kapitza 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: 6562557
    Abstract: A color photographic material comprising a transparent support, at least one blue-sensitive, predominantly yellow-coupling silver halide emulsion layer, at least one green-sensitive, predominantly magenta-coupling silver halide emulsion layer (PP-1) and at least one red-sensitive, predominantly cyan-coupling silver halide emulsion layer (BG-1), characterised in that the spectral sensitivity distribution of BG-1 is characterised in that 605≦&lgr;max≦630 nm, 0.1≦&Dgr;lgE640≦0.6 and 1.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: May 13, 2003
    Assignee: Agfa-Gevaert
    Inventors: Klaus Wagner, Heinz Schütz, Peter Bell, Lothar Endres, Detlev Kapitza, Thomas Stetzer
  • Publication number: 20020031734
    Abstract: A colour photographic material comprising a transparent support, at least one blue-sensitive, predominantly yellow-coupling silver halide emulsion layer, at least one green-sensitive, predominantly magenta-coupling silver halide emulsion layer (PP-1) and at least one red-sensitive, predominantly cyan-coupling silver halide emulsion layer (BG-1), characterised in that the spectral sensitivity distribution of BG-1 is characterised in that
    Type: Application
    Filed: July 19, 2001
    Publication date: March 14, 2002
    Inventors: Klaus Wagner, Heinz Schtz, Peter Bell, Lothar Endres, Detlev Kapitza, Thomas Stetzer
  • Patent number: 6261758
    Abstract: The production of tabular silver bromide-iodide emulsions and silver bromide-chloride-iodide emulsions with an aspect ratio 32, an iodide content from 1 to 40 mol % and a chloride content from 0 to 20 mol %, by the process steps of (a) silver halide nucleus precipitation, and (b) at least one further precipitation of silver halide, wherein rein at least one aromatic five- or six-membered, heterocyclic compound, which is free from—SH—,—SSO2H— and—SSO2R groups, is added in an amount from 10−9 to 10−4 mol/mol silver during nucleus precipitation or during the precipitation of an inner zone of the silver halide grain which is different from the nucleus precipitate, results in an improved speed/grain size ratio and in an increased stability of a photographic material which contains an emulsion produced in this manner.
    Type: Grant
    Filed: July 14, 2000
    Date of Patent: July 17, 2001
    Assignee: Agfa-Gevaert
    Inventors: Ralf Wirowski, Hans-Ulrich Borst, Detlev Kapitza, Jörg Siegel, Peter Bergthaller, Heinrich Odenwälder