Patents by Inventor Hartmut Spitzner

Hartmut Spitzner 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).

  • Linear polyether-polysiloxane copolymers, their preparation and use
    Patent number: 6187891
    Abstract: The present invention relates to linear polyether-polysiloxane copolymers of the general formula A(BC)nBA, in which linear polyether and linear polysiloxane units are linked via Si—C bonds, and to a process for their preparation.
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: February 13, 2001
    Assignee: Wacker-Chemie GmbH
    Inventors: Holger Rautschek, Hartmut Spitzner