Patents Assigned to Marmorit GmbH
  • Light-weight material containing blown perlite and methods of producing the same
    Patent number: 6355098
    Abstract: The present light-weight material contains expanded perlite, alkali silicates and optionally added hardeners for aqueous alkali silicates, wherein said expanded perlite has a grain of from 0.8 to 6 mm, a hydrophobizing agent is present, the bulk densities are in the range of from 60 to 500 kg/m3.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: March 12, 2002
    Assignee: Marmorit GmbH
    Inventor: Alfred Pfemeter