Patents by Inventor William J. Meiners

William J. Meiners 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).

  • Methods and apparatus for subterranean drilling utilizing a top drive
    Patent number: 6412576
    Abstract: Apparatus and methods for a top drive unit for drilling of hydrocarbon wells, with the top drive including a channel or passage allowing for passage of drill pipe through the top drive to provide ease of operation during drilling operations. With this passage, drill pipe may be passed through the top drive instead of moving the unit aside as is required with conventional top drives.
    Type: Grant
    Filed: June 22, 2000
    Date of Patent: July 2, 2002
    Inventor: William J. Meiners