Patents by Inventor Petra Stinglhammer

Petra Stinglhammer 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).

  • Aqueous emulsions containing organohydropolysiloxanes
    Patent number: 6184406
    Abstract: The invention relates to aqueous emulsions containing (A) organo-hydrogenated polysiloxanes optionally mixed with organopolysiloxanes free of Si linked hydrogen and organyloxy groups, (B) organopolysiloxanes containing organyloxy groups as stabilizers, (C) emulsifiers and (D) water.
    Type: Grant
    Filed: January 26, 2000
    Date of Patent: February 6, 2001
    Assignee: Wacker-Chemie GmbH
    Inventors: Michael Geck, Enno Funk, Petra Stinglhammer, Bernward Deubzer, Gerhard Preiner
  • Preparation of organopolysiloxane microemulsions
    Patent number: 5712343
    Abstract: The invention relates to the preparation of organopolysiloxane microemulsions, wherein the components (A) organopolysiloxane, (B) emulsifier, (C) water, optionally, (D) cosurfactant and optionally (E) acid are brought together and mixed in any desired sequence. Microemulsions are formed spontaneously without introduction of energy in the form of heat or severe shearing forces.
    Type: Grant
    Filed: April 17, 1996
    Date of Patent: January 27, 1998
    Assignee: Wacker-Chemie GmbH
    Inventors: Michael Geck, Hans-Juergen Lautenschlager, Bernward Deubzer, Petra Stinglhammer, Peter Habereder, Kurt Ullrich