Patents by Inventor Claus Witte

Claus Witte 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).

  • Catalytic decomposition of dinitrogen monoxide
    Patent number: 5612009
    Abstract: A supported silver-containing catalyst for the decomposition of dinitrogen monoxide as pure gas or in admixture with other gases and having an aluminum oxide support which has a specific surface area of from 26 to 350 m.sup.2 /g, and a process for the selective catalytic decomposition of dinitrogen monoxide as pure gas or in admixture with other gases at elevated temperature, in which the said supported catalyst is used.
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: March 18, 1997
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Fetzer, Wolfgang Buechele, Hermann Wistuba, Claus Witte, Gert Buerger, Guenter Herrmann
  • Copper-containing catalyst for low temperature shift conversion
    Patent number: 5128307
    Abstract: Copper-containing catalysts for low temperature shift conversion at from 150.degree. to 300.degree. C. and under from 10 to 40 bar, which additionally contain aluminum and zinc, if necessary in the form of the compounds or oxides and are prepared by coprecipitation, the copper-containing catalysts containing potassium and having a BET surface area adapted to the potassium content, and the potassium content being brought to 0.1-3.0% by weight at a BET surface of from 30 to 160 m.sup.2 /g, are used for the preparation of hydrogen and carbon dioxide from carbon monoxide and water.
    Type: Grant
    Filed: January 30, 1991
    Date of Patent: July 7, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Wanjek, Claus Witte, Michael J. Sprague, Matthias Irgang, Wolfgang Hoelderich, Wolf D. Mross