Patents by Inventor Uwe Ellenbrand

Uwe Ellenbrand 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).

  • Hydrophobic fumed silica and silicone rubber materials containing the fumed silica
    Patent number: 8293834
    Abstract: The present invention relates to a hydrophobic, fumed silica which is obtained by reacting fumed silicas with cyclic polysiloxanes of the type —[O—SiR2]n—, where R is a C1 to C6 alkyl group and n is 3 to 9, and subsequently milling the silanized silicas obtained, and to a process for the preparation of the silica according to the invention, and to silicone rubber materials containing the silica according to the invention.
    Type: Grant
    Filed: May 6, 2008
    Date of Patent: October 23, 2012
    Assignee: Evonik Degussa GmbH
    Inventors: Juergen Meyer, Horst Zeizinger, Mario Scholz, Uwe Ellenbrand
  • Hydrophobic fumed silica and silicone rubber materials containing the fumed silica
    Patent number: 8075862
    Abstract: The present invention relates to a hydrophobic, fumed silica which is obtained by milling a fumed silica which has fixed dimethylsilyl and/or monomethylsilyl groups on the surface due to silanization; and to a process for the preparation of the silica according to the invention, and to silicone rubber materials containing the silica according to the invention.
    Type: Grant
    Filed: May 6, 2008
    Date of Patent: December 13, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Juergen Meyer, Horst Zeizinger, Mario Scholz, Uwe Ellenbrand
  • HYDROPHOBIC FUMED SILICA AND SILICONE RUBBER MATERIALS CONTAINING THE FUMED SILICA
    Publication number: 20100168305
    Abstract: The present invention relates to a hydrophobic, fumed silica which is obtained by milling a fumed silica which has fixed dimethylsilyl and/or monomethylsilyl groups on the surface due to silanization; and to a process for the preparation of the silica according to the invention, and to silicone rubber materials containing the silica according to the invention.
    Type: Application
    Filed: May 6, 2008
    Publication date: July 1, 2010
    Applicant: Evonik Degussa GmbH
    Inventors: Juergen Meyer, Horst Zeizinger, Mario Scholz, Uwe Ellenbrand
  • HYDROPHOBIC FUMED SILICA AND SILICONE RUBBER MATERIALS CONTAINING THE FUMED SILICA
    Publication number: 20100152349
    Abstract: The present invention relates to a hydrophobic, fumed silica which is obtained by reacting fumed silicas with cyclic polysiloxanes of the type —[O—SiR2]n—, where R is a C1 to C6 alkyl group and n is 3 to 9, and subsequently milling the silanized silicas obtained, and to a process for the preparation of the silica according to the invention, and to silicone rubber materials containing the silica according to the invention.
    Type: Application
    Filed: May 6, 2008
    Publication date: June 17, 2010
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Juergen Meyer, Horst Zeizinger, Mario Scholz, Uwe Ellenbrand