Patents by Inventor Jury G. Pukhov

Jury G. Pukhov 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 producing high-purity gallium
    Patent number: 4362560
    Abstract: A process for producing high-purity gallium from gallium-arsenic containing wastes resulting from the manufacture of semiconductors which comprises a vacuum-thermal decomposition of said wastes under a residual pressure of from 1.10.sup.-1 to 1.10.sup.-2 mm Hg while elevating temperature to from 25.degree. to 1,150.degree. C. at variable heating rates ranging from 0.5.degree. to 20.degree. C./min. The vacuum-thermal decomposition of the wastes is accompanied by sublimation of arsenic which is condensed. The resulting melt of gallium is cooled to a temperature of from 50.degree. to 100.degree. C. at variable cooling rates ranging from 0.05.degree. to 15.degree. C./min. Then the melt of gallium is filtered at the cooling temperature of the melt. The filtered gallium melt is subjected to a hydrochemical treatment.
    Type: Grant
    Filed: November 28, 1980
    Date of Patent: December 7, 1982
    Inventors: Vladimir N. Abrjutin, Vyacheslav P. Ezhkov, Raisa V. Ivanova, Oleg N. Kalashnik, Vyacheslav A. Kirichenko, Alexandr V. Peredereev, Jury G. Pukhov, Arkady A. Belsky, Vladimir V. Kozhemyakin, Galina E. Masjuk