Patents by Inventor Steffon Hasenzahl

Steffon Hasenzahl 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).

  • Patent number: 6841144
    Abstract: The present invention concerns a method for the production of a titanium-containing zeolite whereby a synthesis gel is formed by combining and hydrolysing a hydrolysable silicon compound, a hydrolysable titanium compound and a basic quaternary ammonium compound in an aqueous medium, in quantities such that relative to the starting compounds the molar ratio of Si/Ti is greater than or equal to 30 and that of N/Si is 0.12 to less than 0.20, and the synthesis gel is then crystallised at a temperature of 150 ° C. to 220 ° C. for a period of less than 3 days, and a titanium-containing zeolite obtainable by this method.
    Type: Grant
    Filed: February 24, 2001
    Date of Patent: January 11, 2005
    Assignee: Degussa AG
    Inventors: Steffon Hasenzahl, Klaus Heyne, Dieter Kneitel
  • Publication number: 20030103894
    Abstract: The present invention concerns a method for the production of a titanium-containing zeolite whereby a synthesis gel is formed by combining and hydrolysing a hydrolysable silicon compound, a hydrolysable titanium compound and a basic quaternary ammonium compound in an aqueous medium, in quantities such that relative to the starting compounds the molar ratio of Si/Ti is greater than or equal to 30 and that of N/Si is 0.12 to less than 0.20, and the synthesis gel is then crystallised at a temperature of 150° C. to 220 ° C. for a period of less than 3 days, and a titanium-containing zeolite obtainable by this method.
    Type: Application
    Filed: September 3, 2002
    Publication date: June 5, 2003
    Inventors: Steffon Hasenzahl, Klaus Heyne, Dieter Kneitel