Patents by Inventor Douglas Chick

Douglas Chick 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 of sealing pipe
    Patent number: 4602974
    Abstract: A method of lining a pipeline or passageway with a flexible tubular liner. The liner is caused to evert in the pipeline by a fluid under pressure, and a former is used to smooth out the everting face of the liner and evenly apply resin over the everting face.
    Type: Grant
    Filed: May 10, 1983
    Date of Patent: July 29, 1986
    Inventors: Eric Wood, Douglas Chick