Patents by Inventor Gisbert Schaefer

Gisbert Schaefer 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).

  • Processes for preparing crosslinker-free, biopolymer-containing three dimensional structures, and products prepared thereby
    Publication number: 20050272922
    Abstract: Processes for preparing crosslinker-free, chitosan-containing compositions, comprising: (a) providing an aqueous mixture of a chitosan, wherein the aqueous mixture has a viscosity of from 1,000 mPas to 100,000 mPas; (b) combining a precipitant with the aqueous mixture to form a crosslinker-free chitosan composition; and (c) drying the crosslinker-free chitosan composition to form a crosslinker-free three-dimensional structure; are described.
    Type: Application
    Filed: May 2, 2005
    Publication date: December 8, 2005
    Inventors: Andrea Heilemann, Josef Holzer, Andreas Sander, Gisbert Schaefer