Patents Assigned to Grafo Colloids Corporation
  • Lubricant for mandrels, forging dies, molds and the like
    Patent number: 4001125
    Abstract: A lubricant for glass molds and forging dies and for mandrels used in seamless tube manufacture is formed from a mixture consisting principally of gilsonite powder and water, but containing a dispersant and a thickener. When the lubricant is intended for mandrels, sufficient thickener is used to give it a paste-like consistency similar to a light grease.
    Type: Grant
    Filed: June 9, 1975
    Date of Patent: January 4, 1977
    Assignee: Grafo Colloids Corporation
    Inventor: Archibald R. Newton, III