Patents by Inventor Richard L. Giroux

Richard L. Giroux 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).

  • Oil well testing apparatus
    Patent number: RE29471
    Abstract: A ball valve type, full opening bore, oil well formation tester utilizes a J-slot mechanism and vertical tool string manipulations to open and close a substantially unrestricted axial bore through the testing tool to allow formation fluid flow through the tool at the command of the tool operator.
    Type: Grant
    Filed: June 1, 1976
    Date of Patent: November 15, 1977
    Assignee: Halliburton Company
    Inventor: Richard L. Giroux