Patents by Inventor Karl-Friedrich Bruder

Karl-Friedrich Bruder 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).

  • Method for producing alkoxy-substituted phthalocyanins
    Publication number: 20070179285
    Abstract: The invention relates to a process for preparing alkoxy-substituted, metal-containing phthalocyanines of the formula (I) where R is substituted or unsubstituted alkyl or cycloalkyl, M is a divalent metal atom, metaloxy or a trivalent or tetravalent substituted metal atom, characterized in that the phthalonitrile of the formula (II) is reacted in the presence of a metal salt and a base in a water-miscible solvent.
    Type: Application
    Filed: June 22, 2004
    Publication date: August 2, 2007
    Inventors: Horst Berneth, Karl-Friedrich Bruder, Karin Hassenruck, Oliver Falkner, Serguei Kostromine, Christa Kruger, Timo Meyer-Friedrichsen, Josef-Walter Stawitz, Rafael Oser
  • Optical data medium containing, in the information layer, a phthalocyanine dye as a light-absorbing compound
    Publication number: 20020076648
    Abstract: The invention relates to an optical data medium containing a preferably transparent substrate that is optionally already coated with one or more reflective layers and on the surface of which have been applied:
    Type: Application
    Filed: September 20, 2001
    Publication date: June 20, 2002
    Inventors: Horst Berneth, Karl-Friedrich Bruder, Wilfried Haese, Karin Hassenruck, Serguei Kostromine, Peter Landenberger, Thomas Sommermann, Josef-Walter Stawitz, Rainer Hagen, Rafael Oser