Patents Represented by Attorney, Agent or Law Firm Connelly Dave Lodge & Hutz LLP
  • Iron oxide red pigments, process for the production of iron oxide red pigments and use thereof
    Patent number: 6179908
    Abstract: The present invention relates to iron oxide red pigments, a process for the production of iron oxide red pigments by calcining iron oxide yellow pigments or iron oxide black pigments, and the use thereof.
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: January 30, 2001
    Assignee: Bayer AG
    Inventors: Rolf-Michael Braun, Eckhard Bayer, Ulrich Meisen