Patents by Inventor Ivan Stepanovich Krainov

Ivan Stepanovich Krainov 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).

  • Patent number: 3957690
    Abstract: A heterogeneous catalyst for oxidation of propylene into propylene oxide in the liquid phase which is a carrier with active components supported thereon, the latter being oxides of scandium, yttrium, indium, gallium, thallium, or rare-earth elements of the lanthanum group, or mixtures of oxides of the above metals. In addition to with said active components, the catalyst can also contain silver, oxides of vanadium, molybdenum, tungsten, bismuth, manganese, or tantalum, or mixtures of the above active components.The method for preparing the catalyst consists in that the carrier is treated with an aqueous solution of a mineral acid or a mixture of mineral acids at 80.degree. to 100.degree.C, washed with water and dried at 300.degree. to 400.degree.C. The thus treated carrier is impregnated with aqueous solutions of salts of the corresponding metals. The impregnated carrier is treated at a temperature of 700.degree. to 800.degree.C.
    Type: Grant
    Filed: March 14, 1973
    Date of Patent: May 18, 1976
    Inventors: Alexandr Vasilievich Bobolev, Alexandr Sergeevich Tatikolov, Natalya Nikolaevna Lukashina, Ivan Stepanovich Krainov, Nikolai Markovich Emanuel