Patents by Inventor John P. Ungerman

John P. Ungerman 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).

  • Anti-rotation pipe joint
    Patent number: 5868443
    Abstract: Mechanical pipe connections are provided by this invention which include an interlocking system between two pipes to be connected within a tubular fitting member. The interlocking system includes male and female portions which mechanically mesh together to form binding contact between the pipes to reduce the individual rotation of the pipes relative to one another.
    Type: Grant
    Filed: October 6, 1997
    Date of Patent: February 9, 1999
    Assignee: CertainTeed Corp.
    Inventors: James M. Ungerman, John P. Ungerman, Lawrence Shumaker