Patents by Inventor C. Sherill Henegar

C. Sherill Henegar 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).

  • Coal tar enamel coated steel pipe and process for same
    Patent number: 6220305
    Abstract: Described is a preferred method for manufacturing a coal tar enamel-coated steel pipe, in which a primer coat of epoxy resin is applied to a preheated steel pipe, and coal tar enamel is applied to the primer coat prior to full curing of the latter. The resulting coated steel pipes, which also are described, exhibit excellent resistance to cathodic disbondment, heat and water.
    Type: Grant
    Filed: January 13, 1998
    Date of Patent: April 24, 2001
    Assignee: Reilly Industries, Inc.
    Inventors: John R. Johnson, William R. Roder, C. Sherill Henegar
  • Coal tar enamel coated steel pipe and process for same
    Patent number: 5713393
    Abstract: Described is a preferred method for manufacturing a coal tar enamel-coated steel pipe, in which a primer coat of epoxy resin is applied to a preheated steel pipe, and coal tar enamel is applied to the primer coat prior to full curing of the latter. The resulting coated steel pipes, which also are described, exhibit excellent resistance to cathodic disbondment, heat and water.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 3, 1998
    Assignee: Reilly Industries, Inc.
    Inventors: John R. Johnson, William R. Roder, C. Sherill Henegar
  • Coal tar enamel coated steel pipe and process for producing same
    Patent number: 5567480
    Abstract: Described is a method for manufacturing a coal tar enamel-coated steel pipe, in which a primer coat of epoxy resin is applied to a preheated steel pipe, and coal tar enamel is applied to the primer coat prior to full curing of the latter. The resulting coated steel pipes, which also are described, exhibit excellent resistance to cathodic disbondment, heat and water. In some embodiments the primer includes a silane coupling agent.
    Type: Grant
    Filed: December 8, 1994
    Date of Patent: October 22, 1996
    Assignee: Reilly Industries, Inc.
    Inventors: John R. Johnson, William R. Roder, C. Sherill Henegar