Patents by Inventor Joseph M. Chitty

Joseph M. Chitty 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).

  • Process and apparatus for embrittling and subsequently removing an outer protective coating of a pipe or pipeline
    Patent number: 4956042
    Abstract: The protective coating on a pipe is embrittled and removed by enclosing a portion of the pipe in a body defining an annular space around the protective coating. A pressurized liquid nitrogen cryogen is expanded within this annular space for a sufficient time to lower the temperature of both the protective coating and the underlying pipe to a temperature below the temperature of embrittlement of the coating.
    Type: Grant
    Filed: November 1, 1988
    Date of Patent: September 11, 1990
    Assignee: Liquid Air Corporation
    Inventors: Jean-Luc Hubert, Joseph M. Chitty, William A. Ellett