Patents by Inventor Michael Kirschey

Michael Kirschey 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).

  • Preparation of polyoxymethylenes
    Patent number: 6756475
    Abstract: Continuous process for preparing polyoxymethylene homo- or copolymers by bulk polymerization of the monomers in the presence of cationic initiators, and also, if desired, in the presence of regulators, where during the polymerization both the monomers and the polymer are present in molten form and, if desired, the polymer is then deactivated, and the melt is discharged, cooled and pelletized, which comprises discharging, cooling and pelletizing the polymer at an elevated pressure and in the presence of a liquid.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: June 29, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Marian Mours, Rainer Anderlik, Gitta Egbers, Michael Kirschey, Martin Roos
  • Method for production of polyoxymethylenes
    Publication number: 20030018104
    Abstract: Continuous process for preparing polyoxymethylene homo- or copolymers by bulk polymerization of the monomers in the presence of cationic initiators, and also, if desired, in the presence of regulators, where during the polymerization both the monomers and the polymer are present in molten form and, if desired, the polymer is then deactivated, and the melt is discharged, cooled and pelletized, which comprises discharging, cooling and pelletizing the polymer at an elevated pressure and in the presence of a liquid.
    Type: Application
    Filed: August 8, 2002
    Publication date: January 23, 2003
    Inventors: Marian Mours, Rainer Anderlik, Gitta Egbers, Michael Kirschey, Martin Roos