Patents by Inventor Henri J. Van Hal

Henri J. Van Hal 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).

  • Photographic processing apparatus and method
    Patent number: 4814809
    Abstract: A processing apparatus with several liquid stations for the wet processing of image-wise exposed photographic elements, e.g. sheets, wherein the different processing liquids are provided in different liquid compartments (85, 86, 87) of the processing cassette (72), that has openings (88,89,90,91) that are sealed by membranes (92), and wherein the rinsing water compartment is provided with perforate partitions (94) with a scavenging agent for removal of fixing agent ions and complexed silver ions from the rinsing water in said compartment.
    Type: Grant
    Filed: December 14, 1987
    Date of Patent: March 21, 1989
    Assignee: AGFA-GEVAERT N.V.
    Inventors: Jozef P. De Prijcker, Albrecht F. Domen, Marcel R. Fierens, Henri J. Van Hal