Patents by Inventor Colin George Reid

Colin George Reid 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).

  • Cementing plug
    Patent number: 6237686
    Abstract: A cementing plug has a plurality of body segments which are secured together, preferably by adhesive, to form a plug body. Elastomer wipers are clamped between the body segments. This cementing plug may be readily made shorter or longer in length with an increased or decreased number of wipers. Elastomer covers only the wipers and not the plug body.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: May 29, 2001
    Assignee: Top-Co Industries Ltd.
    Inventors: Robert Lawrence Ryll, Colin George Reid