Patents by Inventor Maik Rau

Maik Rau 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 of making polyesters
    Patent number: 7300999
    Abstract: Thermoplastic polyesters are made by a method in which precondensation is carried in a column whose sections are formed with structured packings and operated at subatmospheric, pressure.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: November 27, 2007
    Assignee: Lurgi Zimmer GmbH
    Inventors: Stefan Deiss, Klaus Kirsten, Lutz Janko, Maik Rau
  • Method for adding raw materials during the production of polyesters or copolyesters
    Publication number: 20060189783
    Abstract: The invention relates to a method for the manufacture of polyester or copolyester without the application of a weighing machine for dosing the solid principal raw material, dicarboxylic acid, and an appropriate concept for the closed-loop control of the molar ratio of the paste prepared from the starting materials without the direct measurement of the mass flow of the solid principal raw material, dicarboxylic acid, by weighing. In addition, an indirect method for the determination of the raw material consumption without direct weighing of the solid raw material is suggested.
    Type: Application
    Filed: January 13, 2004
    Publication date: August 24, 2006
    Inventors: Stefan Deiss, Klaus Kirsten, Lutz Janko, Maik Rau
  • Method of making polyesters
    Publication number: 20050240005
    Abstract: Thermoplastic polyesters are made by a method in which precondensation is carried in a column whose sections are formed with structured packings and operated at subatmospheric, pressure.
    Type: Application
    Filed: April 22, 2005
    Publication date: October 27, 2005
    Inventors: Stefan Deiss, Klaus Kirsten, Lutz Janko, Maik Rau