Patents by Inventor Robert Markl

Robert Markl 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).

  • Process for dehydrogenating secondary cyclic alcohols
    Patent number: 6162758
    Abstract: In the dehydrogenation of secondary alcohols in the presence of a catalyst comprising zinc oxide and calcium carbonate at elevated temperature in the gas phase, secondary cyclic alcohols are used and the dehydrogenation is carried out in the presence of hydrogen and a catalyst whose active components comprise from 30 to 60% by weight of zinc oxide and from 40 to 70% by weight of calcium carbonate in the calcite modification.
    Type: Grant
    Filed: September 3, 1998
    Date of Patent: December 19, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Josef Brocker, Michael Hesse, Robert Markl
  • Process for preparing oxidation products from cyclohexane in counterflow
    Patent number: 6075169
    Abstract: In a process for preparing oxidation products of cyclohexane by catalytic oxidation with oxygen-containing gases in the liquid phase, where the gases are brought into contact essentially uniformly with the liquid cyclohexane in a reaction zone, liquid cyclohexane and the oxygen-containing gases are passed in countercurrent through the reaction zone.
    Type: Grant
    Filed: April 14, 1999
    Date of Patent: June 13, 2000
    Assignee: BASF Aktiengesellshcaft
    Inventors: Alwin Rehfinger, Martin Gann, Robert Markl, Rudiger Schmitt