Patents by Inventor Hans Joachim Meinke

Hans Joachim Meinke 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 ethylene polymerization in a tubular reactor with reduced output
    Patent number: 8273835
    Abstract: Process for the preparation of ethylene homopolymers or copolymers in the presence of free-radical polymerization initiators at from 100° C. to 350° C. and pressures in the range of from 160 MPa to 350 MPa in a tubular reactor with at least two spatially separated initiator injection points, wherein injecting initiator rises the temperature of the reaction mixture in the reaction zone following the injection point, and the first initiator injection point of the tubular reactor is not provided with initiator or is provided with so little initiator that the temperature of the reaction mixture does not rise more than 20° C.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: September 25, 2012
    Assignee: Basell Polyolefine GmbH
    Inventors: Dieter Littmann, Andre-Armand Finette, Hans Joachim Meinke
  • Method for Ethylene Polymerization in a Tubular Reactor with Reduced Output
    Publication number: 20110294967
    Abstract: Process for the preparation of ethylene homopolymers or copolymers in the presence of free-radical polymerization initiators at from 100° C. to 350° C. and pressures in the range of from 160 MPa to 350 MPa in a tubular reactor with at least two spatially separated initiator injection points, wherein injecting initiator rises the temperature of the reaction mixture in the reaction zone following the injection point, and the first initiator injection point of the tubular reactor is not provided with initiator or is provided with so little initiator that the temperature of the reaction mixture does not rise more than 20° C.
    Type: Application
    Filed: January 14, 2010
    Publication date: December 1, 2011
    Applicant: BASELL POLYOLEFINE GMBH
    Inventors: Dieter Littmann, Andre-Armand Finette, Hans Joachim Meinke