Patents by Inventor Vladimir V. Alekhin

Vladimir V. Alekhin 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 and apparatus for injecting samples into gas chromatograph
    Patent number: 4414857
    Abstract: Disclosed is a method and apparatus for injecting samples into the evaporator of a gas chromatograph effected by a sample carrier, whereafter the thus formed vapors are transferred into the flow of a carrier gas. According to one aspect of the invention, the evaporator of the gas chromatograph is sealed only for a period of the sample introduction subsequent to the physical communication of the evaporator with the sample carrier. Vapors of the substance under analysis are conveyed from the evaporator into the chromatographic column via a flow constrictor of constant cross-sectional diameter.According to another aspect of the invention the flow constrictor of constant cross-section is positioned essentially after the passageway communicating the sample carrier with the evaporator but prior to the passageway for evacuating the vapors from the evaporator to the chromatographic column.
    Type: Grant
    Filed: August 10, 1981
    Date of Patent: November 15, 1983
    Inventors: Vadim V. Brazhnikov, Eduard P. Skornyakov, Jury A. Sultanovich, Vladimir M. Poshemansky, Karl I. Sakodynsky, Semen S. Berlin, Vladimir V. Ogurtsov, Vladimir V. Alekhin