Patents by Inventor Norman B. Duncan

Norman B. Duncan 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: 4302210
    Abstract: A molded artificial log for burning and producing heat comprising sawdust, wax, cotton lint, a hardwood charcoal powder, and a binder is disclosed. A specific proportion of the components are mixed together and molded by an extrusion device to produce a long burning artificial log. The artificial logs have general use in fireplaces and wood burning stoves and are substantially made of renewable plant components and waste products providing an environmentally valuable energy resource.
    Type: Grant
    Filed: December 27, 1979
    Date of Patent: November 24, 1981
    Inventor: Norman B. Duncan
  • Patent number: 4165968
    Abstract: A rapidly ignitable and even burning charcoal briquette having a coating formed thereon comprised of a flammable alcohol and a wicking material bound to the surface of the briquette by a layer of gel-like material. The invention also comprises a method for forming said ignitable coating.
    Type: Grant
    Filed: May 9, 1978
    Date of Patent: August 28, 1979
    Inventor: Norman B. Duncan