Patents by Inventor Hilmar Gilges

Hilmar Gilges 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).

  • Photocatalytic process
    Patent number: 6508941
    Abstract: A process for photocatalytic removal of organic substances from waste waters, wherein by way of photocatalyst use is made of granulates based on pyrogenically prepared titanium dioxide having the following physicochemical characteristic data: Mean grain diameter: 10 to 150 &mgr;m BET surface: 25 to 100 m2/g pH value: 3 to 6 Compacted bulk density: 100 to 1,200 g/l.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: January 21, 2003
    Assignee: Degussa AG
    Inventors: Jürgen Meyer, Hilmar Gilges, Ina Hemme, Anna Moiseev, Sven-Uwe Geissen
  • Granules based on pyrogenic titanium dioxide and a process for preparing the granules
    Patent number: 6413490
    Abstract: Granules based on titanium dioxide with the characteristics: Average particle diameter: 10 to 150 &mgr;m BET surface area: 25 to 100 m2/g pH: 3 to 6 Compacted density: 400 to 1,200 g/l The granules are prepared by dispersing titanium dioxide in water, spray-drying and silanizing. In the silanized form, the granules have the following characteristics: Average particle diameter: 10 to 160 &mgr;m BET surface area: 15 to 100 m2/g pH: 3.0 to 9.0 Compacted density: 400 to 1,200 g/l Carbon content: 0.3 to 12.0 wt. % The granules are used, inter alia, as catalyst supports, in cosmetics, as sun screens, in silicone rubber, in toning powder, in lacquers and colorants, as grinding and polishing agents and as a raw material for producing glass and ceramics.
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: July 2, 2002
    Assignee: Degussa-Huls AG
    Inventors: Hilmar Gilges, Dieter Kerner, Jürgen Meyer
  • Photocatalytic process
    Publication number: 20020027108
    Abstract: A process for photocatalytic removal of organic substances from waste waters, wherein by way of photocatalyst use is made of granulates based on pyrogenically prepared titanium dioxide having the following physicochemical characteristic data: 1 Mean grain diameter: 10 to 150 &mgr;m BET surface: 25 to 100 m2/g pH value: 3 to 6 Compacted bulk density: 100 to 1,200 g/l.
    Type: Application
    Filed: May 25, 2001
    Publication date: March 7, 2002
    Inventors: Jurgen Meyer, Hilmar Gilges, Ina Hemme, Anna Moiseev, Sven-Uwe Geissen