Patents by Inventor Timothy B. Ryan

Timothy B. Ryan 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).

  • Corporation stop assembly
    Patent number: 5988199
    Abstract: A fitting for coupling a service line to a polyethylene fluid distribution pipe such as a water main or a gas main includes a stub length of polyethylene pipe that serves as a base for attaching a corporation stop valve. The cross section of the open base end is machined to match the curvature of the outside surface of the main pipe and then fused into the sidewall of the main. The corporation stop valve can then be used for hot tapping polyethylene mains.
    Type: Grant
    Filed: November 1, 1996
    Date of Patent: November 23, 1999
    Assignee: Phillips Petroleum Company
    Inventors: Timothy B. Ryan, Harvey E. Svetlik