Patents by Inventor Peter John Collins

Peter John Collins 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).

  • Pipe cleaning device
    Patent number: 5903946
    Abstract: A pipe cleaning device comprises a central body and articulated scraper elements. The articulated shape of the scraper elements serves to enhance the cleaning performance of the device.
    Type: Grant
    Filed: December 30, 1997
    Date of Patent: May 18, 1999
    Assignee: Shell Oil Company
    Inventors: Peter John Collins, Vyvian Anthony Cox