Patents by Inventor Christopher Down

Christopher Down 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).

  • Downhole drilling tool
    Publication number: 20060151216
    Abstract: A downhole drilling tool 136 comprises a drillstring 138, a drilling head 140, and a freewheel 144 for transferring drive from the drillstring to the drilling head. The freewheel 144 is positioned between the drillstring 138 and the drilling head 140.
    Type: Application
    Filed: January 12, 2005
    Publication date: July 13, 2006
    Inventors: George Swietlik, Christopher Down