Patents by Inventor Carsten Gehrhardt

Carsten Gehrhardt 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 separation of a polymer from a polymer solution or dispersion
    Patent number: 9688782
    Abstract: The present invention relates to a method for separation of a polymer from a polymer solution or dispersion, wherein (i) a solution or dispersion of a polymer in an organic solvent is atomized by being brought into contact with water vapor in an atomizer container; (ii) the mixture obtained in the atomizer container is routed into a polymer degasification container and flows through same, wherein the organic solvent present in the polymer particles is driven at least partially out of the polymer particles due to the thermal contact between the polymer particles and the water vapor and transitions into the gas phase (iii) the mixture exiting from the polymer degasification container is routed into a phase separator (1) and the organic solvent present in the gas phase is separated from the polymer particles and the condensed water vapor; and (iv) the polymer particles and the condensed water vapor are routed into a phase separator (2) in order to separate the polymer particles from the condensed water vapor.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: June 27, 2017
    Assignee: Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V.
    Inventors: Ulrich Wendler, Marcus Vater, Carsten Gehrhardt, Frank Herzig
  • METHOD FOR SEPARATION OF A POLYMER FROM A POLYMER SOLUTION OR DISPERSION
    Publication number: 20160137757
    Abstract: The present invention relates to a method for separation of a polymer from a polymer solution or dispersion, wherein (i) a solution or dispersion of a polymer in an organic solvent is atomized by being brought into contact with water vapour in an atomizer container; (ii) the mixture obtained in the atomizer container is routed into a polymer degasification container and flows through same, wherein the organic solvent present in the polymer particles is driven at least partially out of the polymer particles due to the thermal contact between the polymer particles and the water vapour and transitions into the gas phase (iii) the mixture exiting from the polymer degasification container is routed into a phase separator (1) and the organic solvent present in the gas phase is separated from the polymer particles and the condensed water vapour; and (iv) the polymer particles and the condensed water vapour are routed into a phase separator (2) in order to separate the polymer particles from the condensed water vapou
    Type: Application
    Filed: March 24, 2014
    Publication date: May 19, 2016
    Inventors: Ulrich Wendler, Marcus Vater, Carsten Gehrhardt, Frank Herzig