Patents by Inventor Darshan Patwardhan

Darshan Patwardhan 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).

  • Ampholytic anionic copolymers
    Patent number: 7829070
    Abstract: Ampholytic copolymers which contain a molar excess of anionogenic and/or anionic groups, polyelectrolyte complexes which contain such an ampholytic copolymer, cosmetic and pharmaceutical compositions which contain at least one such copolymer or polyelectrolyte complex and the use of these copolymers and polyelectrolyte complexes are described.
    Type: Grant
    Filed: December 8, 2004
    Date of Patent: November 9, 2010
    Assignee: BASF SE
    Inventors: Son Nguyen-Kim, Klemens Mathauer, Claudia Wood, Gerd Schuh, Darshan Patwardhan
  • Ampholytic anionic copolymers
    Publication number: 20070141013
    Abstract: Ampholytic copolymers which contain a molar excess of anionogenic and/or anionic groups, polyelectrolyte complexes which contain such an ampholytic copolymer, cosmetic and pharmaceutical compositions which contain at least one such copolymer or polyelectrolyte complex and the use of these copolymers and polyelectrolyte complexes are described.
    Type: Application
    Filed: December 8, 2004
    Publication date: June 21, 2007
    Applicant: BASF Aktiengesellschaft
    Inventors: Son Nguyen-Kim, Klemens Mathauer, Claudia Wood, Gerd Schuh, Darshan Patwardhan