Patents by Inventor John H. Yonker

John H. Yonker 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).

  • Patent number: 4026363
    Abstract: An apparatus and method for performing a desired operation in a selected mandrel in a well. The apparatus includes a running assembly with selector stop means and operating tool means. The running assembly is run in the tubing string until the selector stop means positively locates it with respect to the selected mandrel. The operating tool means can then be manipulated to perform the desired operation in the selected mandrel. This abstract is neither intended to define the invention of the application which, of course, is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way.
    Type: Grant
    Filed: December 9, 1975
    Date of Patent: May 31, 1977
    Assignee: Otis Engineering Corporation
    Inventors: John H. Yonker, Phillip S. Sizer
  • Patent number: 3957119
    Abstract: A pumpable tool and method of utilizing the tool to perform an operation at a point axially spaced from a circulating means between a pair of conduits. The tool includes a pair of pistons one of which is associated with a bypass valve. The operation is performed by applying fluid pressure in both conduits with the bypass valve closed. The tool can be circulated out of one of the conduits when the bypass valve is open. This abstract is neither intended to define the invention of the application which, of course, is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way.
    Type: Grant
    Filed: December 18, 1974
    Date of Patent: May 18, 1976
    Inventor: John H. Yonker