Patents by Inventor Jury Nikolaevich Vilk

Jury Nikolaevich Vilk 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 the production of hydrogen fluoride, phosphoric anhydride, calcium polyphosphates and nitric acid
    Patent number: 4010241
    Abstract: A process for the production of hydrogen fluoride, phosphoric anhydride, calcium polyphosphates and nitric acid, is disclosed, characterized in that natural phosphate is heated by a plasma stream of working gas in the presence of water vapors to form hydrogen fluoride which is recovered as a commercial product. Then the thus defluorinated phosphate is further heated by an air plasma stream having a bulk temperature of at least 3,500.degree. K. and containing nitrogen oxides. Under such conditions, the defluorinated phosphate decomposes to form phosphoric anhydride and calcium oxide.The gas stream carrying the phosphoric anhydride, the calcium oxide and the nitrogen oxides is cooled down to yield, as commercial products, either phosphoric anhydride and nitric acid, or calcium polyphosphates containing up to 70% P.sub.2 O.sub.5 and nitric acid, or else all of the three products, depending on the cooling conditions.
    Type: Grant
    Filed: August 27, 1974
    Date of Patent: March 1, 1977
    Inventors: Alfred Lvovich Mosse, Vladimir Vasilievich Pechkovsky, Anatoly Ivanovich Teterevkov, Igor Sergeevich Burov, Jury Nikolaevich Vilk, Vadim Andreevich Ershov, Alexandr Antonovich Chelnokov, Oleg Iosifovich Yasko, Vladimir Vladimirovich Bysjuk, Elena Dmitrievna Dzjuba