Patents by Inventor Markus Hornfeck

Markus Hornfeck 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).

  • Layer obtained from an aqueous dispersion containing a silicon/titanium mixed oxide powder prepared by flame-hydrolysis
    Patent number: 7132157
    Abstract: A layer which is obtained by thermal treatment from an aqueous dispersion applied to a substrate, the dispersion containing silicon/titanium mixed oxide powder prepared by flame hydrolysis. It is prepared by applying a dispersion which contains the silicon/titanium mixed oxide powder to a substrate and then sintering by using a thermal treatment. It can be used, for example, on materials with very low coefficients of expansion.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: November 7, 2006
    Assignee: Degussa AG
    Inventors: Monika Oswald, Helmut Mangold, Klaus Deller, Rolf Clasen, Markus Hornfeck
  • Dispersion comprising silicon/titanium mixed oxide powder, and green bodies and shaped glass articles produced therefrom
    Patent number: 6849114
    Abstract: Aqueous dispersion comprising silicon/titanium mixed oxide powder with a BET surface area of 5 to 500 m2/g which has been prepared by flame hydrolysis and has a titanium dioxide content of 0.5 to 20 wt. %, based on the powder, water and at least one pH-regulating substance which can be removed completely from the reaction mixture on heating, the aqueous dispersion having a solids content of between 40 and 80 wt. %. A green body produced therefrom with a green density of between 40 and 85%. A shaped glass article of optical quality with a coefficient of thermal expansion of not more than 0.5×10?6/K produced from the green body.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: February 1, 2005
    Assignee: Degussa AG
    Inventors: Monika Oswald, Klaus Deller, Helmut Mangold, Gerrit Schneider, Rolf Clasen, Markus Hornfeck
  • Dispersion comprising silicon/titanium mixed oxide powder, and green bodies and shaped glass articles produced therefrom
    Publication number: 20030232149
    Abstract: Aqueous dispersion comprising silicon/titanium mixed oxide powder with a BET surface area of 5 to 500 m2/g which has been prepared by flame hydrolysis and has a titanium dioxide content of 0.5 to 20 wt. %, based on the powder, water and at least one pH-regulating substance which can be removed completely from the reaction mixture on heating, the aqueous dispersion having a solids content of between 40 and 80 wt. %. A green body produced therefrom with a green density of between 40 and 85%. A shaped glass article of optical quality with a coefficient of thermal expansion of not more than 0.5×10−6/K produced from the green body.
    Type: Application
    Filed: February 25, 2003
    Publication date: December 18, 2003
    Applicant: DEGUSA AG
    Inventors: Monika Oswald, Klaus Deller, Helmut Mangold, Gerrit Schneider, Rolf Clasen, Markus Hornfeck
  • Layer obtained from an aqueous dispersion containing a silicon/titanium mixed oxide powder prepared by flame-hydrolysis
    Publication number: 20030134128
    Abstract: A layer which is obtained by thermal treatment from an aqueous dispersion applied to a substrate, the dispersion containing silicon/titanium mixed oxide powder prepared by flame hydrolysis. It is prepared by applying a dispersion which contains the silicon/titanium mixed oxide powder to a substrate and then sintering by using a thermal treatment. It can be used, for example, on materials with very low coefficients of expansion.
    Type: Application
    Filed: January 15, 2002
    Publication date: July 17, 2003
    Applicant: DEGUSSA AG
    Inventors: Monika Oswald, Helmut Mangold, Klaus Deller, Rolf Clasen, Markus Hornfeck