Patents by Inventor Ulrike Duderstadt

Ulrike Duderstadt 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).

  • RHEOLOGY MODIFIER
    Publication number: 20110166312
    Abstract: The invention relates to a rheology modifier for improving the flowability of technical plastics, which drastically improves the thermoplastic processing behavior of the plastics without impairing the usage properties of the manufactured molded bodies.
    Type: Application
    Filed: May 7, 2009
    Publication date: July 7, 2011
    Applicant: EVONIK GOLDSCHMIDT GMBH
    Inventors: Alexander Klein, Ulrike Duderstadt, Joachim Heyne, Timo Herold
  • Process for the production of calcium formate
    Patent number: 5248818
    Abstract: Calcium formate is produced in aqueous phase by reaction of calcium hydroxide with formaldehyde in the presence of hydrogen peroxide or by reaction of calcium peroxide with formaldehyde. The molar ratio of CaO or Ca(OH).sub.2 to H.sub.2 CO to H.sub.2 O.sub.2 is 1 to 2 to 1-1.2 and the molar ratio of CaO.sub.2 to H.sub.2 CO is 1 to 2. Calcium formate is obtained in an almost substantially quantitative yield and in highly pure form. The process avoids the disadvantages of prior processes for the production of calcium formate from calcium hydroxide and formaldehyde.
    Type: Grant
    Filed: March 24, 1992
    Date of Patent: September 28, 1993
    Assignee: Degussa Aktiengesellschaft
    Inventors: Peter Werle, Martin Trageser, Ulrike Duderstadt