Patents by Inventor Kurt Spitznagel

Kurt Spitznagel 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).

  • FUMED SILANIZED AND GROUND SILICA
    Publication number: 20120152151
    Abstract: The invention relates to a hydrophobic fumed silica which is obtained by grinding a fumed silica which, as a result of silanization, has trimethylsilyl groups fixed on the surface; and to coating formulations comprising this silica.
    Type: Application
    Filed: March 1, 2012
    Publication date: June 21, 2012
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Jürgen MEYER, Kurt Spitznagel, Günther Michael, Tina Gross
  • Fumed silanized and ground silica
    Patent number: 8163080
    Abstract: The invention relates to a hydrophobic fumed silica which is obtained by grinding a fumed silica which, as a result of silanization, has trimethylsilyl groups fixed on the surface; and to coating formulations comprising this silica.
    Type: Grant
    Filed: May 6, 2008
    Date of Patent: April 24, 2012
    Assignee: Evonik Degussa GmbH
    Inventors: Juergen Meyer, Kurt Spitznagel, Guenther Michael, Tina Gross
  • FUMED SILANIZED AND GROUND SILICA
    Publication number: 20100126387
    Abstract: The invention relates to a hydrophobic fumed silica which is obtained by grinding a fumed silica which, as a result of silanization, has trimethylsilyl groups fixed on the surface; and to coating formulations comprising this silica.
    Type: Application
    Filed: May 6, 2008
    Publication date: May 27, 2010
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Juergen Meyer, Kurt Spitznagel, Guenther Michael, Tina Gross
  • Structurally coated silica
    Patent number: 7303624
    Abstract: A structurally coated silica can be prepared by spraying and mixing a pyrogenic silica with water and a coating agent in a suitable mixing vessel, then milling and then conditioning the product. The structurally coated silica can be used as a matting agent in lacquers.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: December 4, 2007
    Assignee: DeGussa AG
    Inventors: Jürgen Meyer, Kurt Spitznagel, Hans-Dieter Christian
  • Texture-coated silica
    Patent number: 7285330
    Abstract: Texture-coated silica can be prepared by spraying a fumed silica with water and a coating agent, for example a thermoplastic elastomer, while mixing in a suitable mixing vessel, then milling and subsequently drying the mixture. The texture-coated silica can be used as a delustering agent in lacquers and for improving the soft feel.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: October 23, 2007
    Assignee: Degussa GmbH
    Inventors: Jürgen Meyer, Kurt Spitznagel, Hans-Dieter Christian
  • Structurally coated silica
    Publication number: 20040127604
    Abstract: A structurally coated silica can be prepared by spraying and mixing a pyrogenic silica with water and a coating agent in a suitable mixing vessel, then milling and then conditioning the product.
    Type: Application
    Filed: December 11, 2003
    Publication date: July 1, 2004
    Applicant: DeGUSSA AG
    Inventors: Jurgen Meyer, Kurt Spitznagel, Hans-Dieter Christian
  • Texture-coated silica
    Publication number: 20040121156
    Abstract: Texture-coated silica can be prepared by spraying a fumed silica with water and a coating agent, for example a thermoplastic elastomer, while mixing in a suitable mixing vessel, then milling and subsequently drying the mixture.
    Type: Application
    Filed: December 11, 2003
    Publication date: June 24, 2004
    Applicant: DeGUSSA AG
    Inventors: Jurgen Meyer, Kurt Spitznagel, Hans-Dieter Christian
  • Process for the production of silica with an aerogel type structure
    Patent number: 4150101
    Abstract: Aerogel like silica is prepared having:A BET surface area between 80-450 m.sup.2 /g;A bulk density between 10-60 g/l;A DBP number between 2.4-3.8;An average particle size range of 0.1-7 .mu.m;A most frequent particle size range of 1-2 .mu.m;A pH value in a 4% aqueous suspension of 6-8.The aerogel is produced by homogeneously distributing 5-50 weight % of water in air dispersed pyrogenic silica and drying the powdery mixture obtained. The products are especially useful as delustering agents.
    Type: Grant
    Filed: March 14, 1975
    Date of Patent: April 17, 1979
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventors: Felix Schmidt, Kurt Spitznagel, Adolf Wagner