Patents by Inventor Philip S. Sizer

Philip S. Sizer 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 a well during drilling operations
    Patent number: 4076083
    Abstract: A method and apparatus for use in controlling a well during drilling operations is disclosed. The method includes actuating a downhole packer and providing for flow in a controlled manner past the packer. The apparatus includes a packer and means for controlling flow past the packer. This abstract is neither intended to define the scope of the invention which, of course, is defined in the claims, nor is it intended to be limiting in anyway.
    Type: Grant
    Filed: November 24, 1975
    Date of Patent: February 28, 1978
    Assignee: Otis Engineering Corporation
    Inventor: Philip S. Sizer