Patents by Inventor Dieter Rockser

Dieter Rockser 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).

  • Color photographic silver halide material
    Patent number: 6284447
    Abstract: A color photographic silver halide material which is developed as a negative, at least 90 mol % of the silver halides of which consist of AgCl, and which contains a compound of formula (I) or formula (II) in a light-insensitive layer which is further from the support than is each light—light sensitive layer, is distinguished by its improved color reproduction.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: September 4, 2001
    Assignee: Agfa-Gevaert
    Inventors: Cuong Ly, Dieter Rockser, Edgar Draber, Markus Geiger, Jürgen Heinecke, Randolph Trommer
  • Color photographic silver halide material
    Patent number: 6194135
    Abstract: A negatively developing color photographic silver halide material having a support and at least one blue-sensitive silver halide emulsion layer containing at least one yellow coupler, at least one green-sensitive silver halide emulsion layer containing at least one magenta coupler and at least one red-sensitive silver halide emulsion layer containing at least one cyan coupler, at least 95 mol % of the silver halides of which consist of AgCl, and in which at least one silver halide emulsion layer exhibits solarization on analogue exposure, is distinguished on scanning exposure by elevated color density and on analogue exposure by contrast which is independent of exposure time.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: February 27, 2001
    Assignee: Agfa-Gevaert Naamloze Vennootschap
    Inventors: Cuong Ly, Stefan Amann, Jürgen Jung, Dieter Rockser
  • Photographic recording material
    Patent number: 5888709
    Abstract: Oxonol dyes of the formula I ##STR1## in which R.sub.1, R.sub.2 mean an optionally substituted furyl or thienyl group,R.sub.3, R.sub.4 mean an aryl group substituted with at least two sulpho groups,L means CH or CR.sub.5,R.sub.5 means C.sub.1 -C.sub.4 alkyl andn means 0, 1 or 2,give rise in a photographic material to an improvement in sharpness.
    Type: Grant
    Filed: August 26, 1996
    Date of Patent: March 30, 1999
    Assignee: Agfa-Gevaert AG
    Inventors: Hans Ohlschlager, Wolfgang Schmidt, Dieter Rockser, Gustav Tappe
  • Color photographic material
    Patent number: 5021336
    Abstract: Color photographic recording material containing, on a reflective layer support, at least one blue sensitive, at least one green sensitive and at least one red sensitive layer of binder containing silver halide and optionally other light insensitive layers of binder, which binder has been hardened with an instant hardener, said recording material containing either from 100 to 900 mMol of soluble chloride and from 0 to 50 mMol of soluble bromide per mole of Ag or from 0 to 600 mMol of soluble chloride and from 5 to 50 mMol of soluble bromide per mol of Ag is distinguished by an exceptionally slight storage fog.
    Type: Grant
    Filed: July 13, 1990
    Date of Patent: June 4, 1991
    Assignee: Agfa Gevaert Aktiengesellschaft
    Inventors: Helmut Reuss, Bruno Mucke, Helmut Mader, Dieter Rockser