Patents by Inventor Edwin Cornelis Gerardus Rooyakkers

Edwin Cornelis Gerardus Rooyakkers 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 tool stop device and method for use of same
    Patent number: 10030457
    Abstract: The present invention relates to a downhole-tool stop device (1) and a method of using the same, the stop device (1) comprising a first collar (4) attached to an elongated body (9), characterized by the stop device (1) including a second collar (6) attached to the elongated body (9), and the second collar (6) being displaceably attached to the elongated body (9), and the first collar (4) and the second collar (6) being placed a distance (A1) apart.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: July 24, 2018
    Assignee: ARDYNE AS
    Inventors: Edwin Cornelis Gerardus Rooyakkers, Steffen Hansen, Steffen Evertsen