Patents Assigned to Aarding Weerstandslas B.V.
  • Method for making granular hydrothermally hardened material
    Patent number: 4419312
    Abstract: Hydrothermally cured articles are formed by mixing a filler and a binder, moulding this mixture and coating said moulded articles with silica or calcium hydroxide particles. Hydrothermal curing may comprise a first step, wherein the steam pressure in the autoclave is increased, thereafter the steam pressure is decreased and subsequently the pressure is increased to a steam pressure being higher than in the first step.
    Type: Grant
    Filed: January 2, 1979
    Date of Patent: December 6, 1983
    Assignee: Aarding Weerstandslas B.V.
    Inventors: Hendrik Loggers, Gijsbert Versteeg