Patents by Inventor Cristina Freire Erdbrügger

Cristina Freire Erdbrügger 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).

  • Catalyst and process for the selective hydrogenation of unsaturated compounds in hydrocarbon streams
    Patent number: 6350717
    Abstract: A catalyst comprising at least one metal of the 10th group of the Periodic Table of the Elements and at least one metal of the 11th group of the Periodic Table of the Elements on an aluminum oxide support, wherein the metal or metals of the 10th group is or are essentially concentrated in an outer layer close to the surface of the catalyst particle, the metal or metals of the 11th group is or are distributed essentially uniformly over the volume of the catalyst particle and the weight ratio of the metal or metals of the 11th group to the metal or metals of the 10th group is not more than 1.95.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: February 26, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Andrea Frenzel, Cristina Freire Erdbrügger, Ekkehard Schwab, Michael Hesse, Gerd Linden, Herbert Wanjek, Hans-Martin Allmann
  • Catalytic distillation process
    Patent number: 6297415
    Abstract: A catalyst packing which can be produced by vapor deposition and/or sputtering of at least one substance active as catalyst and/or promotor onto woven or knitted fabrics or sheets as support material is used in a process for catalytic distillation in which a heterogeneously catalyzed reaction is combined with a simultaneous distillation or rectification over the catalyst packing.
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: October 2, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Josef Bröcker, Klemens Flick, Cristina Freire Erdbrügger, Gerd Kaibel, Gerald Meyer, Hans-Joachim Müller, Peter Polanek, Ekkehard Schwab
  • Preparation of alcohols
    Patent number: 6201160
    Abstract: Alcohols are prepared by the catalytic hydrogenation of the corresponding carbonyl compounds at elevated temperatures and at superatmospheric pressure in the liquid phase by a process in which the catalyst used contains copper on an SiO2-containing carrier in the presence or absence of one or more of the elements magnesium, barium, zinc and chromium.
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: March 13, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Brudermüller, Matthias Irgang, Martin Schmidt-Radde, Franz Merger, Tom Witzel, Detlef Kratz, Eckehard Danz, Arnold Wittwer, Michael Hesse, Manfred Sauerwald, Cristina Freire Erdbrügger