Patents by Inventor Gosta Lennart Flemmert

Gosta Lennart Flemmert 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).

  • Process for converting silicon-and-fluorine-containing waste gases into silicon dioxide and hydrogen fluoride
    Patent number: 3969485
    Abstract: A process is provided for converting silicon and fluorine-containing waste gases into silicon dioxide and hydrogen fluoride, absorbing the waste gases in water to form hydrofluosilicic acid, decomposing the hydrofluosilicic acid in the presence of concentrated sulfuric acid to form silicon tetrafluoride and hydrogen fluoride, converting the silicon tetrafluoride in the vapor phase to silica and hydrogen fluoride, and recovering the hydrogen fluoride.
    Type: Grant
    Filed: December 4, 1974
    Date of Patent: July 13, 1976
    Inventor: Gosta Lennart Flemmert