Patents Assigned to Partek Paroc OY AB
  • Mineral fibre composition
    Patent number: 5843854
    Abstract: A mineral fibre composition which is soluble in biological fluids contains substantially45-65% by weight of SiO.sub.215-40% by weight of CaO0-20% by weight of MgO0-6% by weight of Na.sub.2 O+K.sub.2 Oand in addition aluminium and/or iron oxides as well as phosphorus oxide in such amounts that the weight ratio of P.sub.2 O.sub.5 to the sum of Al.sub.2 O.sub.3 and iron oxide is circa 0.4 to 6.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: December 1, 1998
    Assignee: Partek Paroc OY AB
    Inventors: Kirsti Marjatta Karppinen, Michael Stig Folke Perander, Peter Arnold Henrik Solin, Antero Olavi Pehkonen, Seija Marketta Maine