Patents by Inventor Werner Steigleiter

Werner Steigleiter 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).

  • Platinum-on-graphite catalysts
    Patent number: 5155081
    Abstract: A platinum-on-graphite catalyst having a platinum content of from 0.01 to 5% w/w, wherein the graphite support has an apparent density of from 1.7 to 2.2 g/ml and the use thereof as a hydrogenation catalyst.
    Type: Grant
    Filed: July 16, 1991
    Date of Patent: October 13, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Steigleiter, Wolfgang Hoelderich, Franz-Josef Weiss, Hugo Fuchs, Luc Guns, Gerald Neubauer, Josef Ritz
  • Platinum-on-graphite catalysts and the use thereof
    Patent number: 5120699
    Abstract: A platinum-on-graphite catalyst having a platinum content of from 0.01 to 5% w/w, wherein the graphite support has a particle size of from 1 to 600 .mu.m and the following particle size distribution:______________________________________ 183 to 600 .mu.m 15% v/v .+-. 15% absolute 68.3 to 183 .mu.m 30% v/v .+-. 20% 31.0 to 68.3 .mu.m 25% v/v .+-. 20% 17.1 to 31.0 .mu.m 15% v/v .+-. 10% 5.2 to 17.1 .mu.m 12% v/v .+-. 10% .sup. <5.2 .mu.m 5% v/v .+-. 5%.
    Type: Grant
    Filed: July 16, 1991
    Date of Patent: June 9, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz-Josef Weiss, Hugo Fuchs, Werner Steigleiter, Wolfgang Hoelderich, Luc Guns, Gerald Neubauer, Josef Ritz
  • Preparation of hydroxylammonium salts
    Patent number: 4895711
    Abstract: Hydroxylammonium salts are prepared by catalytic reduction of nitrogen monoxide with hydrogen in dilute aqueous mineral acids at elevated temperature in the presence of suspended supported platinum catalysts obtainable by precipitating metallic platinum from aqueous solutions of platinum salts onto carriers suspended therein by means of reducing agents in the presence of one or more water-soluble substituted or unsubstituted thioureas.
    Type: Grant
    Filed: March 22, 1989
    Date of Patent: January 23, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Biffar, Werner Steigleiter, Franz-Josef Weiss
  • Olefin oligomerization catalysts and a process for their preparation
    Patent number: 4392984
    Abstract: Catalysts, for olefin oligomerization, whose active material has the empirical formula IAPO.sub.4.[P.sub.2 O.sub.5.(H.sub.2 O).sub.n ].sub.a . (XY).sub.b Iwhere A is boron, antimony, bismuth, aluminum and/or 3 equivalents of titanium, X is NH.sub.4.sup..sym. and/or an alkali metal cation and/or one equivalent of an alkaline earth metal cation, Y is one equivalent of an anion, a is 0.02-0.2, b is 0-0.05 and n is 1-3, and a process for the preparation of these catalysts.
    Type: Grant
    Filed: March 25, 1981
    Date of Patent: July 12, 1983
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinz Engelbach, Werner Steigleiter, Helmut Glietenberg