Patents by Inventor Franz Büttgen

Franz Büttgen 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).

  • Method for producing alkylene oxide addition products
    Patent number: 8674146
    Abstract: The invention relates to a method for producing alkylene oxide addition products by reaction of compounds having a nucleophilic center with alkylene oxides in a reactor having a large inner surface. The invention is characterized in that the reaction is carried out exclusively in the liquid phase.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: March 18, 2014
    Assignee: Cognis IP Management GmbH
    Inventors: Stefan Franzen, Franz Büttgen, Ingomar Mrozek, Bernhard Gutsche
  • Method for Producing Alkylene Oxide Addition Products
    Publication number: 20100041923
    Abstract: The invention relates to a method for producing alkylene oxide addition products by reaction of compounds having a nucleophilic center with alkylene oxides in a reactor having a large inner surface. The invention is characterized in that the reaction is carried out exclusively in the liquid phase.
    Type: Application
    Filed: August 29, 2007
    Publication date: February 18, 2010
    Applicant: Cognis IP Management GmbH
    Inventors: Stefan Franzen, Franz Büttgen, Ingomar Mrozek, Bernhard Gutsche