Patents Assigned to Kerr-McGee Pigments GmbH
  • REDUCING AGENT FOR THE SOLUBLE CHROMATE CONTENT OF CEMENT AND METHODS FOR PRODUCTION THEREOF
    Publication number: 20120137934
    Abstract: The invention relates to a reducing agent for the soluble chromate content of cement and to methods for the production thereof, which comprise concentrating an used sulfuric acid, containing iron (II) sulfate, and separating the sulfuric acid from the obtained precipitate which contains iron (II) sulfate.
    Type: Application
    Filed: February 13, 2012
    Publication date: June 7, 2012
    Applicant: Kerr-McGee Pigments GmbH
    Inventors: Michael VÖSSING, Gerhard AUER, Benno LAUBACH, Detlef KLEIN, Werner SCHUY, Klaus KÖLLISCH, Erwin WEISS, Werner BAHL, Philip REESE
  • Reducing agent for the soluble chromate content of cement and methods for the production thereof
    Publication number: 20070039522
    Abstract: The invention relates to a reducing agent for the soluble chromate content of cement and to methods for the production thereof, which comprise concentrating an used sulfuric acid, containing iron(II) sulfate, and separating the sulfuric acid from the obtained precipitate which contains iron(II) sulfate.
    Type: Application
    Filed: July 16, 2004
    Publication date: February 22, 2007
    Applicant: Kerr-McGee Pigments GmbH
    Inventors: Michael Vossing, Gerhard Auer, Benno Laubach, Detlef Klein, Werner Schuy, Klaus Kollisch, Erwin Weiss, Werner Bahl, Philip Reese