Patents Assigned to Infineum International Inc.
  • Lubricating oil compositions
    Patent number: 6649576
    Abstract: A crankcase lubricant containing a Group III basestock in a major amount and a Group V basestock in the form of an ester in a minor amount. The lubricant also comprises a dispersant, a metal detergent, one or more other additives, and a viscosity modifier.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: November 18, 2003
    Assignee: Infineum International Inc.
    Inventors: Ian A. W. Bell, Robert Robson
  • Combustion improving additive for small engine lubricating oils
    Patent number: 6525004
    Abstract: There are disclosed novel reaction products of a borated hydrocarbyl succinimide dispersant and a phosphorus compound selected from the group consisting of (i) zinc dialkyldithiophosphates and (ii) amine salts of acid phosphates which are highly effective combustion improver additives for use in two-cycle and small engine four-cycle lubricating oils.
    Type: Grant
    Filed: May 1, 2001
    Date of Patent: February 25, 2003
    Assignee: Infineum International Inc.
    Inventors: Rolfe J. Hartley, Salvatore Rea, William H. Stover