Patents by Inventor Edith Weyde

Edith Weyde 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).

  • Process for the production of color photographic images and photographic recording materials
    Patent number: 4458009
    Abstract: Color photographic images are produced by decomposing hydrogen peroxide on nuclei present in imagewise distribution and bleaching out a dye by the hydrogen peroxide on those parts of the image where no such nuclei are present.
    Type: Grant
    Filed: January 10, 1983
    Date of Patent: July 3, 1984
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Edith Weyde, Wilhelm Saleck, Hubertus Psaar, Anita von Konig, Hans hlschlager
  • Silver halide emulsion prepared by converting silver phosphate
    Patent number: 4450225
    Abstract: New silver halide emulsions are prepared at least partly by converting a silver phosphate with a water soluble halide.
    Type: Grant
    Filed: June 2, 1982
    Date of Patent: May 22, 1984
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Edith Weyde, Harald von Rintelen, Wilhelm Saleck, Heinz-Horst Teitscheid
  • Silver halide emulsion, a photographic material and a process for the production of photographic images
    Patent number: 4413055
    Abstract: Silver halide emulsion with an average grain size of at most 0.6 .mu.m containing Co-, Ce- or Cu-salts are suitable for the production of vesicular images.
    Type: Grant
    Filed: September 28, 1981
    Date of Patent: November 1, 1983
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Edith Weyde, Harald von Rintelen, Wilhelm Saleck, Heinz-Horst Teitscheid
  • Silver salt emulsion, photographic material and process for the production of photographic images
    Patent number: 4401751
    Abstract: Silver halide emulsions, which have been precipitated in the presence of polymers having recurring units with a 8-hydroxy quinoline structure are suitable for the preparation of vesicular images.
    Type: Grant
    Filed: September 28, 1981
    Date of Patent: August 30, 1983
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Edith Weyde, Harald von Rintelen, Wilhelm Saleck, Heinz-Horst Teitscheid
  • Silver salt photographic material for the production of silver and bubble photographic images with 80% transparency
    Patent number: 4260674
    Abstract: A photographic material for the production of an image in a dry process by forming a vesicle image upon the decomposition of a peroxide compound at image nuclei of silver by providing a layer containing a silver salt which forms upon exposure to light, in imagewise distribution, image nuclei. The silver salt has a grain size of less than 0.3 .mu.m and is present in the layer in an amount of from 1-500 mg/m.sup.2.
    Type: Grant
    Filed: December 14, 1979
    Date of Patent: April 7, 1981
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Edith Weyde, Anita von Konig, Werner Liebe
  • Process for the production of photographic vesicular images in photographic silver halide material
    Patent number: 4065312
    Abstract: The production of an image in a dry process by forming a vesicle image upon the decomposition of a peroxide compound at image nuclei of silver by providing a layer containing a silver salt which forms upon exposure to light, in imagewise distribution, image nuclei. The silver salt has a grain size of less than 0.3 .mu.m and is present in the layer in an amount of from 1 - 500 mg/m.sup.2.
    Type: Grant
    Filed: April 16, 1975
    Date of Patent: December 27, 1977
    Assignee: AGFA-Gevaert, A.G.
    Inventors: Edith Weyde, Anita VON Konig, Werner Liebe