Patents by Inventor Edwin H. Phelps

Edwin H. Phelps 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).

  • Method for coating cylindrical surfaces
    Patent number: 4298634
    Abstract: A method for coating the interior of a cylindrical surface comprising depositing on the interior or a rotating cylindrical surface a dry hydraulic cement composition and applying to the dry cement coating which is held stationary on the interior cylindrical surface by the centrifugal force of the rotating cylinder an aqueous composition and allowing the cement to harden to provide a coating having no tendency to slump or sag in the wet condition.
    Type: Grant
    Filed: November 4, 1980
    Date of Patent: November 3, 1981
    Assignee: Compagnie Internationale Pour l'Informatique CII-Honeywell Bull (Societe Anonyme)
    Inventor: Edwin H. Phelps
  • Method of forming a filled polymer coating on an internal cylindrical surface and article produced thereby
    Patent number: 4254165
    Abstract: A filled, low or medium density polyethylene or other polyolefin composition is used to form a polymer coating on an internal cylindrical metal surface such as, for example, the interior surface of a pipe.
    Type: Grant
    Filed: November 30, 1977
    Date of Patent: March 3, 1981
    Assignee: American Cast Iron Pipe Company
    Inventors: Edwin H. Phelps, William E. Snow