Patents by Inventor Leon L. Dickson, Jr.

Leon L. Dickson, Jr. 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).

  • Tool joint cleaner
    Patent number: 4160457
    Abstract: A portable, hand-held cleaner for cleaning the box and pin ends of a joint of drill pipe using only high-pressure water. The cleaner includes a tubular housing having a plurality of spray nozzles disposed to create a swirling water jet that thoroughly cleans the threads and mating shoulders of the box and pin without requiring the use of solvents or mechanical means, such as brushes.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: July 10, 1979
    Assignee: Shell Oil Company
    Inventors: Leon L. Dickson, Jr., Early B. Denison