Patents by Inventor Vladimir Alexandrovich Balashov

Vladimir Alexandrovich Balashov 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 for producing granulated porous corundum
    Patent number: 3950507
    Abstract: The invention relates to a method for producing granulated porous corundum having a homogeneous porous structure with a total pore volume of 0.3 to 1.0 cm.sup.3 /g and predominant pore size of 5000 to 30000 A. The method comprises subjecting the granules of active alumina or aluminum hydroxide having a porous structure with a total pore volume of 0.3 to 1.0 cm.sup.3 /g and pore size of 20 to 5000 A to heat treatment by increasing the temperature from 20.degree.C to 700.degree.C during a period of at least 0.5 hour, thereafter the granules are heat treated at a temperature range of from 700.degree.C to 1000.degree.C for at least 0.5 hour, and then at a temperature range of from 1000.degree.C to 1400.degree.C for at least 0.5 hour, the heat treatment in the temperature range of from 20.degree.C to 1000.degree.C being carried out in an atmosphere of hydrogen fluoride which is present in amounts of from 0.01 to 2.0 percent of the weight of active alumina.
    Type: Grant
    Filed: March 19, 1974
    Date of Patent: April 13, 1976
    Inventors: Georgy Konstantinovich Boreskov, Valentina Nikclaevna Kuklina, Emmanuil Aronovich Levitsky, Boris Nikolaevich Badaev, Vladimir Alexandrovich Balashov