Patents by Inventor Alexander S. Trushin

Alexander S. Trushin 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).

  • Progressive cavity hydraulic machine
    Patent number: 9051780
    Abstract: This invention relates to machine-building, more specifically, to the design and manufacturing of positive displacement motors various embodiments of which are used for hydrocarbon production.
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: June 9, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Alexander S. Trushin, Jacques Orban