Patents by Inventor Claus Zimmer

Claus Zimmer 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 preparing N-alkyl(meth)acrylamides
    Patent number: 10138202
    Abstract: The invention relates to a process for preparing N-alkyl(meth)acrylamides by reacting (meth)acrylic anhydride with corresponding alkylamines.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: November 27, 2018
    Assignee: Evonik Roehm GmbH
    Inventors: Dirk Broell, Benedikt Laux, Christian Maul, Patrick Peter, Claus Zimmer
  • PROCESS FOR PREPARING N-ALKYL(METH)ACRYLAMIDES
    Publication number: 20140288330
    Abstract: The invention relates to a process for preparing N-alkyl(meth)acrylamides by reacting (meth)acrylic anhydride with corresponding alkylamines.
    Type: Application
    Filed: November 20, 2012
    Publication date: September 25, 2014
    Applicant: Evonik Roehm GmbH
    Inventors: Dirk Broell, Benedikt Laux, Christian Maul, Patrick Peter, Claus Zimmer
  • COMPOSITION STABILIZED FOR PURIFICATION AND METHOD FOR PURIFYING AND FOR PRODUCING HYDROXYALKYL (METH)ACRYLATES
    Publication number: 20110306783
    Abstract: The present invention relates to a composition which comprises at least one hydroxyalkyl(meth)acrylate and has been stabilized for a purification, which comprises hydroquinone monomethyl ether and 4-hydroxy-2,2,6,6-tetramethylpiperidine N-oxyl. The present invention additionally describes processes for purifying and for preparing hydroxyalkyl(meth)acrylates. A further aspect of the present invention is a composition which is obtainable by the processes mentioned.
    Type: Application
    Filed: February 25, 2010
    Publication date: December 15, 2011
    Applicant: Evonik Roehm GmbH
    Inventors: Dirk Broell, Benedikt Laux, Christian Maul, Thorben Schuetz, Bardo Schmitt, Volker Schleep, Claus Zimmer