Patents by Inventor Urs J. Furholz

Urs J. Furholz 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 producing masked positive color images by the silver dye bleach process
    Patent number: 4879203
    Abstract: A process for producing masked positive color images by the silver dye bleach process using a developer solution which contains 0.3 to 1.0 mol/l of a bromide.
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: November 7, 1989
    Assignee: Ciba-Geigy AG
    Inventor: Urs J. Furholz
  • Method of processing exposed photographic silver dye bleach materials comprising heating after processing liquid application
    Patent number: 4868098
    Abstract: The processing of exposed silver dye bleach materials by applying, to the uppermost layer of the material, an amount of processing liquid which corresponds to not more than the swelling volume of the material, followed by a heat treatment.The process is particularly suitable for the production of positive colored images, especially in automatic copying or photographing machines.
    Type: Grant
    Filed: January 5, 1988
    Date of Patent: September 19, 1989
    Assignee: Ciba-Geigy AG
    Inventors: Rolf Steiger, Urs J. Furholz