Patents by Inventor William R. Roder

William R. Roder 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
  • Process for de-ashing coal tar
    Patent number: 5534137
    Abstract: Described are novel processes for treating high-ash coal tars to produce coal tars which are suitable for distillation to form binder pitch. Preferred processes of the invention involve multi-stage centrifugations to reduce ash and preferably also quinoline insoluble levels. Processes of the invention also provide for the treatment of coal tar sludges to recover valuable coal tar distillate and dried, free-flowing coal related material having high fuel value.
    Type: Grant
    Filed: March 21, 1994
    Date of Patent: July 9, 1996
    Assignee: Reilly Industries, Inc.
    Inventors: E. Sean Griggs, William R. Roder
  • Process for increasing pitch yield from coal tar
    Patent number: 5266184
    Abstract: Described is a preferred process for obtaining an increased pitch yield from the distillation of crude coal tar material. The process includes treating a crude coal tar material by reaction with formaldehyde, followed by distillation of the coal tar to afford a yield of coal tar pitch which is significantly increased over that obtained without the formaldehyde treatment.
    Type: Grant
    Filed: February 7, 1992
    Date of Patent: November 30, 1993
    Assignee: Reilly Industries, Inc.
    Inventor: William R. Roder