Patents Assigned to Steetley Minerals Limited
  • Lubricant
    Patent number: 4336150
    Abstract: A lubricant suitable for use in metal forming comprising a copolymer of an unsaturated carboxylic acid and an unsaturated carboxylic acid ester, said copolymer having an acid value of at least 40, polytetrafluoroethylene and a liquid vehicle for the mixture.
    Type: Grant
    Filed: July 7, 1980
    Date of Patent: June 22, 1982
    Assignee: Steetley Minerals Limited
    Inventor: Peter M. Dorrell