Patents by Inventor Karsten Luettgen

Karsten Luettgen 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 continuous emulsion polymerization
    Patent number: 9296851
    Abstract: The invention relates to a process for the preparation of polymers and to an apparatus for performing this process. The apparatus comprises devices and reactors that are combined in the sequence of first a mixing device, second a flow microwave and optionally third one or more additional reactors.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: March 29, 2016
    Assignee: DPx Holdings B.V.
    Inventor: Karsten Luettgen
  • PROCESS FOR CONTINUOUS EMULSION POLYMERIZATION
    Publication number: 20130123427
    Abstract: The invention relates to a process for the preparation of polymers and to an apparatus for performing this process. The apparatus comprises devices and reactors that are combined in the sequence of first a mixing device, second a flow microwave and optionally third one or more additional reactors.
    Type: Application
    Filed: April 1, 2011
    Publication date: May 16, 2013
    Applicants: DSM FINE CHEMICALS AUSTRIA NFG GMBH & CO KG, DSM IP ASSETS B.V.
    Inventor: Karsten Luettgen
  • PROCESS FOR PREPARING O-CHLOROMETHYLPHENYLGLYOXYLIC ESTERS, IMPROVED PROCESS FOR PREPARING (E)-2-(2-CHLOROMETHYLPHENYL)-2-ALKOXIMINOACETIC ESTERS, AND NOVEL INTERMEDIATES FOR THEIR PREPARATION
    Publication number: 20100113778
    Abstract: An improved process for preparing o-chloromethylphenylglyoxylic esters of the formula which comprises converting a compound of the formula by reaction with magnesium into the corresponding Grignard reagent which is then reacted with a compound of the formula to give the compound of the formula which is then cleaved by reaction with a chloroformic ester of the formula CICOOR4 or by reaction with phosgene to give the compound of the formula (I), followed by the isolation of the compound of the formula (I), and also an improved process for preparing (E)-2-(2-chloromethylphenyl)-2-alkoximinoacetic esters of the formula and intermediates for their preparation.
    Type: Application
    Filed: April 10, 2008
    Publication date: May 6, 2010
    Inventors: John-Matthias Wiegand, Karsten Luettgen, Wolfgang Skranc