Patents by Inventor Cristofer Arisandy

Cristofer Arisandy 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).

  • Copolymers, their use as thickeners, and methods for their preparation
    Patent number: 8492497
    Abstract: The present invention relates to copolymers comprising as comonomers in copolymerized form (A) at least one ethylenically unsaturated mono- or dicarboxylic acid, (B) at least one ethylenically unsaturated compound which has at least one structural unit of the general formula (I) per molecule: where the variables are defined as follows: R1 is different or identical and selected from hydrogen, C1-C30-alkyl, C6-C30-aryl and C7-C30-aralkyl, A1 is different or identical and selected from C2-C10-alkylene, C6-C10-arylene and C7-C10-aralkylene, n is different or identical and selected from zero to 200, m is different or identical and selected from 1 to 6, (C) at least one further comonomer.
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: July 23, 2013
    Assignee: BASF SE
    Inventors: Rabie Al-Hellani, Bernd Bruchmann, Daniel Schoenfelder, Anna Cristadoro, Reinhold J Leyrer, Cristofer Arisandy