Patents by Inventor André Roefs

André Roefs 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).

  • Silver halide photographic processing solution
    Patent number: 6740479
    Abstract: A silver halide photographic processing solution comprising at least one polymeric compound inhibiting sludge formation and preventing “pi-line” artefact, more particularly in radiographic non-destructive testing applications, wherein said polymeric compound comprises at least one monomer unit having a silver complexing moiety and at least one monomer unit having a solubilizing group, and wherein both said silver ion complexing moiety and said solubilizing group are comprised in same or different monomer units.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: May 25, 2004
    Assignee: Agfa-Gevaert
    Inventors: Johan Loccufier, Frank Louwet, André Roefs