Patents by Inventor Harold D. Prior, Jr.

Harold D. Prior, Jr. 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).

  • Spray insulating coating for refractory articles
    Patent number: 5944888
    Abstract: The present invention is directed to an insulating coating for refractory articles, adapted to be applied by spraying or gunning, which is easy to apply, cost effective, eliminates the potential health hazards associated with ceramic fiber paper, and which imparts sufficient insulating properties to the refractory article in high temperature environments. More particularly, the present invention is directed to an insulating coating and a method of preparing the insulating coating wherein the coating composition is comprised of about 25% to about 75% by weight of lightweight aggregate, up to about 25% to about 75% by weight of binder, up to 0.5% by weight of organic fiber, up to about 15% by weight of an additive to improve green strength, and up to about 5% by weight of a foaming agent.
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: August 31, 1999
    Assignee: North American Refractories Co.
    Inventors: Regis M. Perich, Harold D. Prior, Jr., Daniel F. Fura
  • Spray insulating coating for refractory articles
    Patent number: 5766686
    Abstract: The present invention is directed to an insulating coating for refractory articles, adapted to be applied by spraying or gunning, which is easy to apply, cost effective, eliminates the potential health hazards associated with ceramic fiber paper, and which imparts sufficient insulating properties to the refractory article in high temperature environments. More particularly, the present invention is directed to an insulating coating and a method of preparing the insulating coating wherein the coating composition is comprised of about 25% to about 75% by weight of lightweight aggregate, up to about 25% to about 75% by weight of binder, up to 0.5% by weight of organic fiber, up to about 15% by weight of an additive to improve green strength, and up to about 5% by weight of a foaming agent.
    Type: Grant
    Filed: March 1, 1996
    Date of Patent: June 16, 1998
    Assignee: North American Refractories Co.
    Inventors: Regis M. Perich, Harold D. Prior, Jr., Daniel F. Fura