Patents Assigned to GFT Ingenieurburo fur Industrieanlagenbau
  • Multi-layer membrane and the use thereof for the separation of liquid mixtures according to the pervaporation process
    Patent number: 5156740
    Abstract: A multi-layer membrane having a porous backing layer of polyacrylonitrile, polysulfone or the like, and an active separating layer of polyvinyl alcohol or cellulose acetate. The membrane is particularly suitable or the separation of water-alcohol mixtures according to the pervaporation process.
    Type: Grant
    Filed: January 25, 1990
    Date of Patent: October 20, 1992
    Assignee: GFT Ingenieurburo Fur Industrieanlagenbau
    Inventor: Hartmut Bruschke
  • Multi-layer membrane and the use thereof for the separation of liquid mixtures according to the pervaporation process
    Patent number: 4915834
    Abstract: A multi-layer membrane having a porous backing layer of polyacrylonitrile, polysulfone or the like, and an active separating layer of polyvinyl alcohol or cellulose acetate. The membrane is particularly suitable for the separation of water-alcohol mixtures according to the pervaporation process.
    Type: Grant
    Filed: April 27, 1988
    Date of Patent: April 10, 1990
    Assignee: GFT Ingenieurburo Fur Industrieanlagenbau
    Inventor: Hartmut Bruschke
  • Multi-layer membrane and the use thereof for the separation of liquid mixtures according to the pervaporation process
    Patent number: 4755299
    Abstract: A multi-layer membrane having a porous backing layer of polyacrylonitrile, polysulfone or the like, and an active separating layer of polyvinyl alcohol or cellulose acetate. The membrane is particularly suitable for the separation of water-alcohol mixtures according to the pervaporation process.
    Type: Grant
    Filed: September 23, 1985
    Date of Patent: July 5, 1988
    Assignee: GFT Ingenieurburo fur Industrieanlagenbau
    Inventor: Hartmut Bruschke