Patents by Inventor Hans-Dieter Christian

Hans-Dieter Christian 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).

  • Coating formulation for improving surface properties
    Publication number: 20050282022
    Abstract: A coating formulation containing at least one surface-modified silicon dioxide having a 60° reflectometer value of<3 and a black number My of at least 140 has excellent performance properties, for example, a very good transparency.
    Type: Application
    Filed: June 13, 2005
    Publication date: December 22, 2005
    Applicant: Degussa AG
    Inventors: Hans-Dieter Christian, Reinhard Behl, Hans-Werner Kohler, Uwe Schmeier, Jurgen Meyer
  • Surface-modified precipitated silicas
    Publication number: 20040249049
    Abstract: A surface-modified precipitated silica, useful as a matting agent, contains the silica having a polymer on a surface thereof. The surface-modified precipitated silica improves the transmission of a clear coating material, having a refractive index of nD20=1.4492 and containing 5% by weight of said silica, by at least 20%, in comparison to the same clear coating material containing 5% by weight of a reference precipitated silica surface treated with a polyethylene wax.
    Type: Application
    Filed: May 13, 2004
    Publication date: December 9, 2004
    Applicant: DEGUSSA AG
    Inventors: Hans-Dieter Christian, Jurgen Schubert, Uwe Schmeier
  • 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
  • Surface-modified, aerogel-type structured silica
    Publication number: 20040120876
    Abstract: A surface-modified, aerogel-type, structured silica is produced by spraying an aerogel-type, structured silica with a silanizing agent, post-mixing and conditioning. It can be used as a flatting agent.
    Type: Application
    Filed: December 11, 2003
    Publication date: June 24, 2004
    Applicant: DeGUSSA AG
    Inventors: Jurgen Meyer, Horst Zeizinger, Manfred Ettlinger, 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
  • Efficient matting agents based on precipitated silicas
    Publication number: 20040047792
    Abstract: Highly efficient matting agents based on precipitated silicas and wax-coated precipitated silicas, their preparation, and their use in inks and paints.
    Type: Application
    Filed: September 8, 2003
    Publication date: March 11, 2004
    Applicant: DEGUSSA AG
    Inventors: Juergen Schubert, Robert Kuhlmann, Hans Dieter Christian