Patents by Inventor Bryant J. Hardy

Bryant J. Hardy 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).

  • Process for the preparation of over-based group 2A metal sulfonate greases and thickened compositions
    Patent number: 5190678
    Abstract: Group 2A metal greases having a dropping point in excess of 650.degree. F. are produced by a manufacturing process in which water is carefully controlled in the process while conversion to grease is occurring. It is necessary to complete the reaction and dehydrate the reaction mixture before finish oils and additives are added in order to obtain a reproducible grease with a high drop point and a low penetration value.
    Type: Grant
    Filed: November 2, 1990
    Date of Patent: March 2, 1993
    Assignee: Conoco Inc.
    Inventors: Charles J. Swartz, Bryant J. Hardy
  • Stable extreme pressure grease
    Patent number: 4842752
    Abstract: A stable extreme pressure grease comprising a base oil, a soap and an EP agent, in the preparation of which excess soap is provided for reaction with the EP agent whereby the thickening effect of the remaining soap in the grease is retained.
    Type: Grant
    Filed: March 22, 1988
    Date of Patent: June 27, 1989
    Assignee: Conoco Inc.
    Inventors: Bryant J. Hardy, Charles J. Swartz
  • Soluble oil concentrate and emulsifier system used therein
    Patent number: 4758374
    Abstract: The combination of a conventional emulsifier package for soluble oils and a synergistic combination of (a) an oxazoline derivative and an amide and (b) an ether sulfate ammonium salt surfactant. The oxazoline drivative and amide contain straight or branched chain alcohol and fatty acid substituents. The ether sulfate ammonium salt surfactant contains a mixture of alkyl groups. The combination is incorporated with a base oil to produce soluble oil concentrate.
    Type: Grant
    Filed: March 17, 1987
    Date of Patent: July 19, 1988
    Assignee: Conoco Inc.
    Inventors: Albert M. Durr, Jr., Bryant J. Hardy
  • Soluble oil emulsifier with bioresistance
    Patent number: 4719029
    Abstract: The ammonium salt of a sulfated ethoxylated alcohol is used as an emulsifying agent to provide resistance to biological degradation of continuous water phase hydraulic fluids. The emulsification agent allows the necessary emulsification properties and in addition provides bioresistance such that there is no need to add a secondary biocide nor to correct emulsification characteristics in order to hold such materials stable in emulsion.
    Type: Grant
    Filed: January 15, 1987
    Date of Patent: January 12, 1988
    Assignee: Conoco Inc.
    Inventor: Bryant J. Hardy