Patents by Inventor John C. Papp

John C. Papp 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 and apparatus for controlling the injection profile of a borehole
    Patent number: 3993130
    Abstract: A method and apparatus for controlling the injection profile of a borehole. It employs a perforated tube which may be attached to a tubing string for introducing an injection fluid opposite a formation to receive the injection. And, there is a perforated sleeve that is rotatable relative to the tube so that the injection fluid will be dynamically distributed over the extent of the perforated tube.
    Type: Grant
    Filed: May 14, 1975
    Date of Patent: November 23, 1976
    Assignee: Texaco Inc.
    Inventor: John C. Papp