Patents by Inventor Oliver Heitmann

Oliver Heitmann 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).

  • Lead-free glass composition and its use
    Patent number: 5843853
    Abstract: The invention pertains to a new lead-free glass composition with improved properties, a glass frit of this composition and its use for the production of glass-enamel, particularly for architectural glass. The glass composition contains in mole %:______________________________________ Na.sub.2 O 10-15 K.sub.2 O 0.1-2 SiO.sub.2 40-50 B.sub.2 O.sub.3 8-12 TiO.sub.2 4-7 Al.sub.2 O.sub.3 0.1-3 ZnO 13-17 F 1-5 ______________________________________and less than 0.5 weight % each of the oxides of the series PbO, CdO, P.sub.2 O.sub.5, and alkaline earth metal oxides. Use of a dye preparation containing the glass frit at 600.degree. to 650.degree. C. results in bakeable glazed, crack-free, acid and base resistant enamel layers.
    Type: Grant
    Filed: August 4, 1997
    Date of Patent: December 1, 1998
    Assignee: Cerdec Aktiengesellschaft Keramische Farben
    Inventors: Oliver Heitmann, Gerhard Tunker
  • Lead-free glass composition and its use
    Patent number: 5707909
    Abstract: The invention pertains to a new lead-free glass composition with improved properties, a glass frit of this composition and its use for the production of glass-enamel, particularly for architectural glass.The glass composition contains in mole %:______________________________________ Na.sub.2 O 10-15 K.sub.2 O 0.1-2 SiO.sub.2 40-50 B.sub.2 O.sub.3 8-12 TiO.sub.2 4-7 Al.sub.2 O.sub.3 0.1-3 ZnO 13-17 F 1-5 ______________________________________and less than 0.5 weight % each of the oxides of the series PbO, CdO, P.sub.2 O.sub.5, and alkaline earth metal oxides. Use of a dye preparation containing the glass frit at 600.degree. to 650.degree. C. results in bakeable glazed, crack-free, acid and base resistant enamel layers.
    Type: Grant
    Filed: February 21, 1996
    Date of Patent: January 13, 1998
    Assignee: Cerdec Aktiengesellschaft Keramische Farben
    Inventors: Oliver Heitmann, Gerhard Tunker