Patents by Inventor Henning Karbe

Henning Karbe 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).

  • Method of producing hydrophobic pyrogenically produced oxides
    Patent number: 6316050
    Abstract: Hydrophobic, pyrogenically produced oxides having a ratio of dimethylsilyl groups to monomethylsilyl groups of 100:0 to 50:50 are prepared by using siloxanes or methylsiloxane mixtures D3 to D9 as hydrophobing agent.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: November 13, 2001
    Inventors: Harald Troll, Thomas Hennig, Jurgen Meyer, Uwe Schachtely, Henning Karbe
  • Silanized silica
    Patent number: 5959005
    Abstract: Silica with the following physico-chemical properties:______________________________________ Specific surface m.sup.2 /g 80-400 Primary particle size nm 7-40 Tapped density g/l 50-300 pH value 3-10 Carbon content % 0.1-15 DBP number % <200 ______________________________________is produced by spraying a silica under intensive mixing, optionally with water or dilute acid at first and then with a surface-modifying reagent or a mixture of several surface-modifying reagents, then mixing, tempering, and subsequently destructuring/compressing and grinding.
    Type: Grant
    Filed: April 14, 1997
    Date of Patent: September 28, 1999
    Assignee: Degussa-Huls Aktiengesellschaft
    Inventors: Werner Hartmann, Juergen Meyer, Hauke Jacobsen, Thomas Hennig, Henning Karbe, Uwe Schachtely