Patents Assigned to Tenax Maskin AB
  • Method of preparing gypsum articles
    Patent number: 4443261
    Abstract: Plaster products can be prepared from calcium sulfate dihydrate by adding to a water slurry of calcium sulfate dihydrate a potassium salt, especially potassium hydrogen-carbonate or potassium tetraborate but, in the first place, potassium sulfate, including a carrier, after which the water slurry is moulded and further worked in known manner to the desired plaster product, especially plaster board or moulds for the production of metal articles or ceramic articles.
    Type: Grant
    Filed: September 8, 1982
    Date of Patent: April 17, 1984
    Assignee: Tenax Maskin AB
    Inventor: Sune Nordqvist