Patents Assigned to Borden France S.A.
  • Patent number: 6015846
    Abstract: Particulate refractory aggregate containing elutable alkali is treated with a particulate active clay having a particle size of less than 0.5 mm in order to reduce the level of the elutable alkali. Sand recovered from spent foundry moulds and cores produced from alkaline binders can be treated to reduce its elutable alkali content and then recycled for further foundry use.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: January 18, 2000
    Assignee: Borden France S.A.
    Inventors: Philippe Marie Toussaint, Patrick Robert Queval, Johannes-Adolf-Jacobus Geraedts, Jacques Andre Caumont
  • Patent number: D310398
    Type: Grant
    Filed: January 30, 1987
    Date of Patent: September 4, 1990
    Assignee: Borden France S.A.
    Inventor: Gerhard Thieser