Patents by Inventor Grigory Z. Bljum

Grigory Z. Bljum 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 producing sulphuric acid
    Patent number: 4125596
    Abstract: The method of preparing sulphuric acid comprises distilling sulphur trioxide with subsequent sublimation condensation by cooling with a coolant having a temperature of from -5.degree. to -15.degree. C. The obtained sulphur trioxide is then treated with sulphuric acid having a concentration in the range of 95 to 96 per cent. The thus prepared sulphuric acid contains impurities in the range of 10.sup.-7 - 10.sup.-8 per cent by weight of cations, and 5.times.10.sup.-5 per cent by weight of anions, SO.sub.3 " in particular.
    Type: Grant
    Filed: April 19, 1977
    Date of Patent: November 14, 1978
    Inventors: Evgeny A. Ryabenko, Grigory Z. Bljum, Tatyana B. Naida, Alexandr E. Golub, Natalya I. Galchina, Alexandr R. Aronov, Natalya F. Semenova, Ljudmila K. Raginskaya, Alexandr M. Vonsovsky