Patents by Inventor Heinfried Emonts

Heinfried Emonts 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).

  • Colored enamel composition for obtaining decorative layers of float glass sheets
    Patent number: 4618538
    Abstract: A glass glazing is provided with a coating of a colored enamel composition along one or more edges. The enamel composition includes a vitreous matrix pigment and from 2 to 5% by weight of powdered tin dioxide which preferably is an additive during a comminution step. The vitreous matrix which represents at least 75% by weight of the enamel composition includes the following constituentsSiO: 25-33 (% by weight)PbO: 47-65B.sub.2 O.sub.3 : 3-7Na.sub.2 O: 1-4K.sub.2 O: 0-2Li.sub.2 O: 0-0.8ZnO: 0.2-0.5and provides a molar ratio of SiO.sub.2 to PbO between 1.6 and 2.7. The total content of the alkaline oxide are less than 5% by weight.The linear thermal expansion coefficient of the vitreous matrix is less than the glazing to be coated.
    Type: Grant
    Filed: September 12, 1985
    Date of Patent: October 21, 1986
    Assignee: Saint-Gobain Vitrage
    Inventors: Heinfried Emonts, Franz Gebhardt