Patents by Inventor Harold T. Stirling

Harold T. Stirling 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).

  • Dust treatment
    Patent number: 4266966
    Abstract: Steelmaking dust is refined by pelletizing the dust and heating the pellets with a reducing agent at a rate sufficient to explode a significant number of pellets.
    Type: Grant
    Filed: March 28, 1979
    Date of Patent: May 12, 1981
    Inventor: Harold T. Stirling
  • Continuous coke making
    Patent number: 4234386
    Abstract: Binder is added to any finely divided coal which can be made to coalesce on heating, the particles are formed into any shape desired for its end usage, and pyrolyzed under conditions carefully controlled to limit the rate of temperature rise of the shaped forms.
    Type: Grant
    Filed: March 22, 1979
    Date of Patent: November 18, 1980
    Inventor: Harold T. Stirling