Patents by Inventor Ivette Castro

Ivette Castro 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).

  • Stabilisation of Aqueous Solutions of Homopolymers and Copolymers of N-Vinylpyrrolidones
    Publication number: 20080033091
    Abstract: Aqueous solutions comprising: one or more polymeric components selected from the group consisting of homopolymers of N-vinylpyrrolidone, copolymers of N-vinylpyrrolidone, and mixtures thereof; and hydrogen peroxide; wherein the hydrogen peroxide is present in an amount of 100 to 5000 ppm; and methods of stabilizing aqueous solutions containing one or more polymeric components selected from the group consisting of homopolymers of N-vinylpyrrolidone, copolymers of N-vinylpyrrolidone, and mixtures thereof.
    Type: Application
    Filed: October 6, 2005
    Publication date: February 7, 2008
    Applicant: BASF Aktiengesellschaft
    Inventors: Erik Bohrer, Dieter Faul, Ivette Castro, Norbert Gebhardt, Peter Hossel, Peter Mendera, Olga Pinneker, Bernd de Potzolli, Stefan Stein, Karl-Hermann Strube, Ralf Widmaier, Josef Neutzner, Simone Lehnert
  • Method for producing a water-in-water polyvinyl lactam dispersion with a k value of = 120
    Publication number: 20070154438
    Abstract: Method for producing water-in-water polyvinyl lactam dispersions with a K value of =120 by radical polymerisation.
    Type: Application
    Filed: April 14, 2005
    Publication date: July 5, 2007
    Applicant: BASF Aktiengesellschaft
    Inventors: Lysander Chrisstoffels, Ralf Widmaier, Ivette Castro, Ludger Wegmann