Patents by Inventor Donald L. Shaw

Donald L. Shaw 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).

  • ROTARY WHEELHOUSE ROLLER HEMMING ASSEMBLY
    Publication number: 20140196516
    Abstract: A rotary wheelhouse roller hemming apparatus in accordance with the present invention includes a support and a rotary mechanism including a plurality of connected anvils driveably rotatable about an axis. The rotary mechanism is mounted on the support. Rotation of the rotary mechanism about the axis moves the anvils between use and standby, non-use positions.
    Type: Application
    Filed: July 16, 2013
    Publication date: July 17, 2014
    Applicant: HIROTEC AMERICA, INC.
    Inventor: Donald L. Shaw
  • Method for the resolution of enhanced oil recovery emulsions
    Patent number: 4444654
    Abstract: An oil-in-water emulsion of crude oil, water and hydrophilic surfactant is resolved by first heating said emulsion until it separates into a surfactant laden water layer and an oil-rich emulsion layer, removing the water layer from the oil-rich emulsion layer, treating the emulsion layer by the addition of from 20 to 40 volume percent of water containing a demulsifier and recovering the crude oil which separates from the water upon standing.
    Type: Grant
    Filed: September 1, 1983
    Date of Patent: April 24, 1984
    Assignee: Exxon Research & Engineering Co.
    Inventors: Virgil H. Cargle, Donald L. Shaw
  • Branched alkyl ether amines as iron ore flotation aids
    Patent number: 4319987
    Abstract: The use of primary aliphatic ether amines as silica collectors in the concentration of minerals by the froth flotation process. More specifically, the use of mixtures of primary methyl branched aliphatic ether amines and the partially-neutralized salts thereof as flotation reagents. In further aspect, the use of mixtures of 3-isooctoxypropyl monoamine and 3-isodecoxypropyl monoamine and/or the partially-neutralized acetate salts thereof as collectors for silica in the beneficiation of oxidized taconite ores.
    Type: Grant
    Filed: September 9, 1980
    Date of Patent: March 16, 1982
    Assignee: Exxon Research & Engineering Co.
    Inventors: Donald L. Shaw, Quentin T. McGlothlin, Barry M. O'Brien, John W. Keck, Wilfred L. Freyberger