Patents by Inventor Alexandr Stepanovich Kostromin

Alexandr Stepanovich Kostromin 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 isolating granular anthraquinone from anthraquinone production process gases
    Patent number: 3988354
    Abstract: A method of isolating granular anthraquinone from anthraquinone production process gases which consists of passing said gasses through a fluidized bed of anthraquinone granules at a temperature of 110.degree. to 160.degree. C.While the gas is being passed through the fluidized bed, the anthraquinone vapors are condensed on the granules which are destroyed as fast as the layer of the condensed anthraquinone is grown thereon with the formation of new granules, and whereon anthraquinone condensation occurs as well. Part of the granules of the anthraquinone are isolated from the fluidized bed as the finished product.
    Type: Grant
    Filed: January 13, 1975
    Date of Patent: October 26, 1976
    Inventors: Vladimir Georgievich Nazarov, Vladimir Konstantinovich Nepokrytykh, Ljubov Markovna Vasilevskaya, Natalya Dmitrievna Rusyanova, Natalya Borisovna Volgina, Vitaly Fedorovich Chernyshev, Nina Alexandrovna Chetverikova, Alexandr Stepanovich Kostromin