Patents by Inventor Boris Timoffee

Boris Timoffee 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).

  • Downhole shut-in tool
    Patent number: 6957699
    Abstract: The invention provides a downhole shut-in tool for obtaining formation pressure data. The tool includes a fast-closing main valve and a pressure-relief valve operable between open and closed positions to effect periodic sealing and release of formation pressure with respect to the surface.
    Type: Grant
    Filed: May 12, 2003
    Date of Patent: October 25, 2005
    Assignee: Stellar Tech Energy Services Inc.
    Inventors: Paul John Feluch, Boris Timoffee
  • Downhole shut-in tool
    Publication number: 20040226721
    Abstract: The invention provides a downhole shut-in tool for obtaining formation pressure data. The tool includes a fast-closing main valve and a pressure-relief valve operable between open and closed positions to effect periodic sealing and release of formation pressure with respect to the surface.
    Type: Application
    Filed: May 12, 2003
    Publication date: November 18, 2004
    Inventors: Paul John Feluch, Boris Timoffee