Patents by Inventor Aleksandr Vasilyevich ELFIMOV

Aleksandr Vasilyevich ELFIMOV 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 pipeline interior drying
    Patent number: 9939114
    Abstract: Pipeline transport of hydrocarbons detect the moisture accumulation location along the pipeline and increase effectiveness of the drying process. Drying air moisture content reduction is obtained by the installing additional intermediate air drying devices in by-pass lines at block valve station along the pipeline to be dried. Purging is proceeded until normalized dew point temperature value of the outcoming air being achieved. Purging is interrupted for 12 hours or more, both upstream and downstream ends of pipeline leaving hermetically closed, and resumed with intermediate air drying devices disabled, continuously measuring the moisture content of the outcoming drying air, fixing the moment when the moisture accumulation in the surrounding air.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: April 10, 2018
    Assignee: PUBLICHNOE AKTSIONERNOE OBSCHESTVO “GAZPROM”
    Inventors: Dmitry Igorevich Shiryapov, Sergei Vsevolodovich Karpov, Aleksei Sergeevich Alikhashkin, Aleksandr Vasilyevich Elfimov
  • METHOD OF PIPELINE INTERIOR DRYING
    Publication number: 20170184253
    Abstract: Pipeline transport of hydrocarbons detect the moisture accumulation location along the pipeline and increase effectiveness of the drying process. Drying air moisture content reduction is obtained by the installing additional intermediate air drying devices in by-pass lines at block valve station along the pipeline to be dried. Purging is proceeded until normalized dew point temperature value of the outcoming air being achieved. Purging is interrupted for 12 hours or more, both upstream and downstream ends of pipeline leaving hermetically closed, and resumed with intermediate air drying devices disabled, continuously measuring the moisture content of the outcoming drying air, fixing the moment when the moisture accumulation in the surrounding air.
    Type: Application
    Filed: December 11, 2014
    Publication date: June 29, 2017
    Applicant: PUBLICHNOE AKTSIONERNOE OBSCHESTVO "GAZPROM"
    Inventors: Dmitry Igorevich Shiryapov, Sergei Vsevolodovich KARPOV, Aleksei Sergeevich ALIKHASHKIN, Aleksandr Vasilyevich ELFIMOV