Patents by Inventor Hugh S. MacKinnon

Hugh S. MacKinnon 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).

  • Phosphate ester-based functional fluids containing an epoxide and a compatible streaming potential-inhibiting metal salt
    Patent number: 5205951
    Abstract: A functional fluid comprising an effective amount of a soluble streaming potential-inhibiting metal salt; an epoxide; and a major amount of a phosphate ester; wherein the metal salt is compatible with the epoxide component of the functional fluid at a temperature of about 260.degree. F. and the functional fluid has a wall current of less than 0.15 microamperes.
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: April 27, 1993
    Assignee: Chevron Research and Technology Company
    Inventor: Hugh S. MacKinnon
  • Streaming potential inhibitor for hydraulic fluids
    Patent number: 5035824
    Abstract: An erosion-inhibited phosphate ester-based functional fluid comprising a major amount of a phosphate ester and from 10 to 50,000 parts per million by weight of a calcium salt of an organic sulfonate, said functional fluid having been heated to a temperature and for a time sufficient to increase the conductivity of said fluid to at least 0.3.mu. mho/cm.
    Type: Grant
    Filed: April 20, 1990
    Date of Patent: July 30, 1991
    Assignee: Chevron Research Company
    Inventor: Hugh S. MacKinnon
  • Amine salt stabilized phosphate ester-based functional fluid
    Patent number: 4324674
    Abstract: The addition of a small amount of a phosphate ester soluble amine salt of a perfluoroalkane sulfonic acid or a perfluoroalkane disulfonic acid to an energy-transmitting functional fluid greatly enhances the anti-erosion properties of the fluid.
    Type: Grant
    Filed: August 28, 1980
    Date of Patent: April 13, 1982
    Assignee: Chevron Research Company
    Inventor: Hugh S. MacKinnon
  • Erosion-inhibited functional fluid
    Patent number: 4302346
    Abstract: The addition of a small amount of a di- or trivalent metal salt of a perfluroalkane sulfonic acid or perfluroalkane disulfonic acid to an energy transmitting functional fluid greatly enhances the anti-erosion properties of the fluid.
    Type: Grant
    Filed: June 28, 1979
    Date of Patent: November 24, 1981
    Assignee: Chevron Research Company
    Inventor: Hugh S. MacKinnon
  • Thermally stabilized erosion-inhibited functional fluids containing perhalometal compounds and an organic base
    Patent number: 4206067
    Abstract: The addition of an organic base to a functional fluid containing a perhalometallic or perhalometalloidic salt maintains the pH of the fluid greater than 7 and thereby stabilizes the antierosion properties of the fluid.
    Type: Grant
    Filed: October 2, 1978
    Date of Patent: June 3, 1980
    Assignee: Chevron Research Company
    Inventor: Hugh S. MacKinnon