Patents Assigned to Deutsche Perlite GmbH
  • Device for the deacidification of water
    Patent number: 4822579
    Abstract: A slow release alkali-reactive agent constitutes or is incorporated in floating bodies which are used to treat acid water for deacidification thereof.
    Type: Grant
    Filed: September 8, 1987
    Date of Patent: April 18, 1989
    Assignee: Deutsche Perlite GmbH
    Inventor: Herbert H. Wagner
  • Apparatus for the expansion of mineral matter, especially perlite and vermiculite
    Patent number: 4512736
    Abstract: Perlite and vermiculite are blown by injecting the particles, entrained in a carrier gas, through a burner at the bottom of a fluidized bed furnace, into the latter with, within and codirectionally with the flame to ensure uniformity of the product.
    Type: Grant
    Filed: December 17, 1982
    Date of Patent: April 23, 1985
    Assignee: Deutsche Perlite GmbH
    Inventor: Heribert Wader