Patents by Inventor Basil S. Fee

Basil S. Fee 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).

  • Solid-solid separations utilizing alkanol amines
    Patent number: 5244155
    Abstract: The separation of silica or siliceous gangue from one or more desired minerals in an aqueous slurry via mechanical apparatus is improved by the addition of a small amount of an alkanol amine to the slurry. Examples of separation techniques benefiting from this technology include cyclones, tables and spiral separators.
    Type: Grant
    Filed: June 24, 1991
    Date of Patent: September 14, 1993
    Assignee: The Dow Chemical Company
    Inventors: Richard R. Klimpel, Basil S. Fee, Donald E. Leonard
  • Recovery of petroleum from tar sands
    Patent number: 5169518
    Abstract: The recovery of bitumen from tar sands by flotation is improved by the use of alkanol amines as flotation promoters. Monoethanolamine and diethanolamine are particularly useful for this purpose.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: December 8, 1992
    Assignee: The Dow Chemical Company
    Inventors: Richard R. Klimpel, Basil S. Fee
  • Alkanol amine grinding aids
    Patent number: 5131600
    Abstract: The efficiency of grinding of silica-containing solids such as mineral ores is improved by the addition of alkanol amines as a grinding aid. Examples of useful amines include diethanol amine, ethanol amine, triethanol amine and mixtures thereof.
    Type: Grant
    Filed: August 14, 1990
    Date of Patent: July 21, 1992
    Assignee: The Dow Chemical Company
    Inventors: Richard R. Klimpel, Donald E. Leonard, Basil S. Fee
  • Depression of the flotation of silica or siliceous gangue in mineral flotation
    Patent number: 5057209
    Abstract: A flotation process is disclosed wherein the selectivity to the valuable mineral is improved by the depression of silica or siliceous gangue by the use of a hydroxy-containing compound such as an alkanol amine. The process is useful in the flotation of oxide minerals as well as in sulfide flotation.
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: October 15, 1991
    Assignee: The Dow Chemical Company
    Inventors: Richard R. Klimpel, Donald E. Leonard, Robert D. Hansen, Basil S. Fee
  • Use of quaternized polyalkylene polyamines as demulsifiers
    Patent number: 4387028
    Abstract: Emulsions of oil and water are broken by contacting the emulsions with a quaternized polyalkylene polyamine, e.g., the adduct of 2-hydroxy-3-chloropropyl trimethyl ammonium chloride and a polyethylene polyamine.
    Type: Grant
    Filed: December 1, 1981
    Date of Patent: June 7, 1983
    Assignee: The Dow Chemical Company
    Inventor: Basil S. Fee