Patents Assigned to Aligena A.G.
  • Reverse osmosis separation process using porous asymmetric acetyl cellulose membrane
    Patent number: 4247401
    Abstract: A method for the separation of organic or metallo-organic substances from salts by reverse osmosis is provided. The membranes used are asymmetric acetyl cellulose membranes modified by covalently bonded residues of reactive dyestuffs containing ionizable groups. The diameter of the pores on the surface of the membrane is 5 to 100 A.
    Type: Grant
    Filed: August 31, 1978
    Date of Patent: January 27, 1981
    Assignee: Aligena A.G.
    Inventors: Rene Bloch, Jacov Yonath