Patents by Inventor Louie E. Davidson

Louie E. Davidson 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).

  • Patent number: 4213486
    Abstract: Steel pipe is provided with an external protective coating by first applying a corrosion protective coating of fused powdered epoxy resin adhered to the pipe, then applying (e.g. as by wrapping a sheet) an outer polyolefin layer directly onto the corrosion protective coating. The outer sheet of polyolefin is provided with a pressure-sensitive adhesive or a hot melt adhesive which adhesive may also be reactive with the epoxy coating (e.g. one having free carboxyl group such as ethylene acrylic acid copolymer). The polyolefin is preferably polyethylene or polypropylene and most preferably polyethylene. Either high or low density polyolefin may be used.
    Type: Grant
    Filed: November 6, 1978
    Date of Patent: July 22, 1980
    Assignee: The Kendall Company
    Inventors: Carlos M. Samour, Earl G. Jackson, Samuel J. Thomas, Louie E. Davidson