Patents by Inventor Clifford J. Ott

Clifford J. Ott 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).

  • Method of producing asphalt
    Patent number: 4750984
    Abstract: A method of producing high quality, homogenous asphalt comprising the steps of mixing and heating a hydrocarbon feedstock not normally suited for asphalt production with elemental sulfur and agitating the resulting mixture. A halide catalyst may be added to the mixture to promote the reaction of the hydrocarbon feedstock with the sulfur. If desired, the agitated mixture may be air blown in any conventional manner to increase its hardness.
    Type: Grant
    Filed: November 18, 1985
    Date of Patent: June 14, 1988
    Inventor: Clifford J. Ott
  • Method for manufacture of ammonium thiosulfate from ammonia and _solid sulfur or H.sub.2 S rich gas stream and/or both solid sulfur _and H.sub.2 S gas streams
    Patent number: 4478807
    Abstract: A process for the manufacture of aqueous ammonium thiosulfate from sulfur dioxide wherein ammonium sulfite is formed as an intermediate product by the scrubbing reaction of ammonia with sulfur dioxide in the presence of water. Preferably, the ammonia is added to the sulfur dioxide in the bottom of the second scrubbing reaction vessel so as to maintain the sulfur dioxide and ammonia in liquid phase.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: October 23, 1984
    Inventor: Clifford J. Ott