Patents by Inventor Stefan Mauerberger

Stefan Mauerberger 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).

  • Heat-transfer media having improved thermal stability and based on higher polyglycols
    Patent number: 7404911
    Abstract: The present invention relates to heat-transfer concentrates for solar installations, containing a) from 92 to 99% by weight of at least one polyglycol of the formula R—O—(CH2—CH2—O)n—H, in which n is an integer of from 3 to 500 and R is H, a C1- to C4-alkyl group or an aromatic radical having 6 to 12 carbon atoms, b) from 1 to 8% by weight of at least one corrosion inhibitor, with the proviso that its content of ethylene glycol and 1,2-propylene glycol is less than 0.2% by weight.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: July 29, 2008
    Assignee: Clariant International Ltd.
    Inventors: Markus Hafner, Achim Stankowiak, Johann Schuster, Stefan Mauerberger
  • Heat-transfer media having improved thermal stability and based on higher polyglycols
    Publication number: 20070181849
    Abstract: The present invention relates to heat-transfer concentrates for solar installations, containing a) from 92 to 99% by weight of at least one polyglycol of the formula R—O—(CH2—CH2—O)n—H, in which n is an integer of from 3 to 500 and R is H, a C1- to C4-alkyl group or an aromatic radical having 6 to 12 carbon atoms, b) from 1 to 8% by weight of at least one corrosion inhibitor, with the proviso that its content of ethylene glycol and 1,2-propylene glycol is less than 0.2% by weight.
    Type: Application
    Filed: February 2, 2007
    Publication date: August 9, 2007
    Inventors: Markus Hafner, Achim Stankowiak, Johann Schuster, Stefan Mauerberger