Patents by Inventor Toan Nicolau

Toan Nicolau 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 based on palladium, gold, alkali metal and lanthanoid and process for preparing vinyl acetate
    Patent number: 6649789
    Abstract: A process for the vapor phase preparation of vinyl acetate in the presence of a catalyst of 0.2 to 1.3% by weight of gold or a gold compound, 0.3 to 10% by weight of an alkali metal compound, 0.5 to 2.0% by weight of a palladium compound and 0.01 to 1% by weight of a lanthanoid compound.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: November 18, 2003
    Assignee: Celanese Chemicals Europe GmbH
    Inventors: Bernhard Herzog, Tao Wang, Toan Nicolau
  • Catalyst based on palladium, gold, alkali, and lanthanoid, and a method for producing vinyl acetate
    Patent number: 6579824
    Abstract: The invention relates to a catalyst which contains palladium and/or compounds thereof, gold and/or compounds thereof, alkali metal compounds and at least one lanthanoid metal and/or compounds thereof. The invention also relates to the utilization of the catalyst in order to produce vinyl acetate from acetic acid, ethylene and oxygen or gases containing oxygen.
    Type: Grant
    Filed: July 20, 2000
    Date of Patent: June 17, 2003
    Assignees: Celanese Chemicals Europe GmbH, Celanese International Corporation
    Inventors: Bernhard Herzog, Tao Wang, Toan Nicolau
  • Catalyst based on palladium, gold, alkali metal and lanthanoid and process for preparing vinyl acetate
    Publication number: 20020198404
    Abstract: A process for the vapor phase preparation of vinyl acetate in the presence of a catalyst of 0.2 to 1.3% by weight of gold or a gold compound, 0.3 to 10% by weight of an alkali metal compound, 0.5 to 2.0% by weight of a palladium compound and 0.01 to 1% by weight of a lanthanoid compound.
    Type: Application
    Filed: June 18, 2002
    Publication date: December 26, 2002
    Applicant: Celanese Chemicals Europe GmbH
    Inventors: Bernhard Herzog, Tao Wang, Toan Nicolau