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Holger Friedrich

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  • Newcastle, ZA
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    METHOD FOR REDUCING HEXAVALENT CHROMIUM IN OXIDIC SOLIDS
    • Publication number 20150166411
    • Publication date Jun 18, 2015
    • LANXESS Deutschland GmbH
    • Rainer Ortmann
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    PROCESS FOR PREPARING CHROMIUM(III) OXIDE
    • Publication number 20140105812
    • Publication date Apr 17, 2014
    • Lanxess Deutschland GmbH
    • Holger Friedrich
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Application

    PROCESS FOR PREPARING CHROMIUM(III) OXIDE
    • Publication number 20130216471
    • Publication date Aug 22, 2013
    • Lanxess Deutschland GmbH
    • Rainer Ortmann
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Application

    METHOD FOR PRODUCING AMMONIUM DICHROMATE
    • Publication number 20130129604
    • Publication date May 23, 2013
    • Lanxess Deutschland GmbH
    • Holger Friedrich
    • C01 - INORGANIC CHEMISTRY
  • Information Patent Application

    METHOD FOR PRODUCING CHROMIUM (III) OXIDE
    • Publication number 20130108543
    • Publication date May 2, 2013
    • Lanxess Deutschland GmbH
    • Holger Friedrich
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    PIGMENT GRANULES WHICH CONTAIN INORGANIC FILTER AIDS
    • Publication number 20100154680
    • Publication date Jun 24, 2010
    • Lanxess Deutschland GmbH
    • Holger Friedrich
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES