Patents by Inventor Verena Melk

Verena Melk 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).

  • Process for preparing a polymer powder
    Patent number: 11084908
    Abstract: A process prepares a polymer powder, with a D50 particle size from 40 to 200 ?m and a Hausner factor of 1.25 or less, by freeze drying and subsequent loosening up of an aqueous polymer dispersion containing 15 to 50% by weight of a polymer. The polymer is polymerized from 10 to 30% by weight of methyl methacrylate, 50 to 70% by weight of methyl acrylate, and 5 to 15% by weight of methacrylic acid.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: August 10, 2021
    Assignee: Evonik Operations GmbH
    Inventors: Peter Niepoth, Verena Melk, Andrea Engel
  • Process for preparing a polymer powder
    Publication number: 20210238369
    Abstract: A process prepares a polymer powder, with a D50 particle size from 40 to 200 ?m and a Hausner factor of 1.25 or less, by freeze drying and subsequent loosening up of an aqueous polymer dispersion containing 15 to 50% by weight of a polymer. The polymer is polymerized from 10 to 30% by weight of methyl methacrylate, 50 to 70% by weight of methyl acrylate, and 5 to 15% by weight of methacrylic acid.
    Type: Application
    Filed: August 7, 2019
    Publication date: August 5, 2021
    Applicant: Evonik Operations GmbH
    Inventors: Peter Niepoth, Verena Melk, Andrea Engel