Patents by Inventor Friedrich Wacker

Friedrich Wacker 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 of producing a pigment containing gold
    Patent number: 6413307
    Abstract: In a method of manufacturing a gold containing pigment, a vaporizable gold compound, a vaporizable compound of another metal, which includes an oxide or a nitride with a melting temperature above the melting temperature of gold, and a reaction gas consisting of a mixture of argon and oxygen are introduced into a first microwave plasma, whereby cores covered with gold clusters are formed from the oxide or nitride and the gold cluster covered cores are subjected to a tempering process at 150° C. to 300° C. for causing coloration of the gold cluster covered oxide or nitride cores.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: July 2, 2002
    Assignee: Forschungszentrum Karlsruhe
    Inventors: Dieter Vollath, Steffen Heidenreich, Friedrich Wacker
  • Method of producing a pigment containing gold
    Publication number: 20010002578
    Abstract: In a method of manufacturing a gold containing pigment, a vaporizable gold compound, a vaporizable compound of another metal, which includes an oxide or a nitride with a melting temperature above the melting temperature of gold, and a reaction gas consisting of a mixture of argon and oxygen are introduced into a first microwave plasma, whereby cores covered with gold clusters are formed from the oxide or nitride and the gold cluster covered cores are subjected to a tempering process at 150° C. to 300° C. for causing coloration of the gold cluster covered oxide or nitride cores.
    Type: Application
    Filed: November 29, 2000
    Publication date: June 7, 2001
    Inventors: Dieter Vollath, Steffen Heidenreich, Friedrich Wacker