Patents by Inventor Lidia Ivanovna Burlakova

Lidia Ivanovna Burlakova 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).

  • Method of processing of waste gases
    Patent number: 3966877
    Abstract: A method of processing of waste gases containing hydrogen fluoride and silicon tetrafluoride or hydrogen fluoride, silicon tetrafluoride and sulfur dioxide by absorption of hydrogen fluoride and silicon tetrafluoride or hydrogen fluoride, silicon tetrafluoride and sulfur dioxide from waste gases by water solutions containing ammonium compounds such as ammonium carbonate, ammonium bicarbonate and ammonium fluoride. In addition to these ammonium compounds the absorption solutions contain sodium fluoride and ammonia. The absorption process produces a water solution containing ammonium fluoride and the precipitate of sodium fluosilicate. This solution is treated with sodium carbonate after which the precipitate of sodium fluoride is separated from the solution and the latter is delivered for absorption.
    Type: Grant
    Filed: September 11, 1974
    Date of Patent: June 29, 1976
    Inventors: Vladimir Sergeevich Kalach, Lidia Ivanovna Burlakova