Patents by Inventor Alexandra Bruhn

Alexandra Bruhn 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 the production of aqueous formulations, aqueous formulations, and the use thereof
    Patent number: 8822589
    Abstract: Process for the preparation of aqueous formulations, wherein (A) at least one ethylenically unsaturated carboxylic acid, (B) at least one heterocyclic comonomer having at least one permanent cationic charge per molecule and (C-P1) at least one ethylenically unsaturated dicarboxylic acid or its anhydride are subjected to free radical copolymerization with one another in an aqueous medium and, shortly before the end or after the end of the copolymerization, further ethylenically unsaturated dicarboxylic acid (C-P2) or its anhydride is added.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: September 2, 2014
    Assignee: BASF SE
    Inventors: Markus Brym, Stephan Hueffer, Audrey Renoncourt, Ulrike Mahn, Franz Glocknitzer, Alexandra Bruhn
  • METHOD FOR THE PRODUCTION OF AQUEOUS FORMULATIONS, AQUEOUS FORMULATIONS, AND THE USE THEREOF
    Publication number: 20100199439
    Abstract: Process for the preparation of aqueous formulations, wherein (A) at least one ethylenically unsaturated carboxylic acid, (B) at least one heterocyclic comonomer having at least one permanent cationic charge per molecule and (C-P1) at least one ethylenically unsaturated dicarboxylic acid or its anhydride are subjected to free radical copolymerization with one another in an aqueous medium and, shortly before the end or after the end of the copolymerization, further ethylenically unsaturated dicarboxylic acid (C-P2) or its anhydride is added.
    Type: Application
    Filed: August 8, 2008
    Publication date: August 12, 2010
    Inventors: Markus Brym, Stephan Hueffer, Audrey Renoncourt, Ulrike Mahn, Franz Glocknitzer, Alexandra Bruhn