Patents by Inventor Klaus Gauler

Klaus Gauler 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).

  • Iron oxide black pigment granules, processes for their preparation and their use
    Patent number: 5002609
    Abstract: A process is disclosed for preparing dispersant-free iron oxide pigment granules by spraying or atomizing an iron oxide black pigment suspension and heating the resulting granules at a temperature of 400.degree.-800.degree. C. The granules are useful for coloring building materials such as concrete.
    Type: Grant
    Filed: March 26, 1990
    Date of Patent: March 26, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jakob Rademachers, Wolfgang Bockelmann, Klaus Gauler