Patents by Inventor Sophia Belfer

Sophia Belfer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • METHOD FOR MODIFYING COMPOSITE MEMBRANES FOR LIQUID SEPARATIONS
    Publication number: 20120031842
    Abstract: A method for modifying the surface of nanofiltration (NF) and reverse osmosis (RO) composite membranes, comprising placing said composite membrane in a suitable vessel having a feed inlet opening and a permeate outlet opening, feeding an aqueous solution of one or more monomer(s) and free radical initiator into said vessel through said inlet opening, generating transmembrane pressure, thereby creating a flux across said membrane into said permeate outlet opening and causing said monomer(s) graft polymerize in the presence of said free radical initiator onto one face of said composite membrane.
    Type: Application
    Filed: January 28, 2010
    Publication date: February 9, 2012
    Applicant: BEN-GURION UNIVERSITY OF THE NEGEV RESEARCH AND DEVELOPMENT AUTHORITY
    Inventors: Viatcheslav Freger, Sophia Belfer, Roy Berenstein
  • Process for improving membranes
    Patent number: 7677398
    Abstract: The invention provides a process for improving the antifouling properties and for increasing the selectivity of commercial composite polyamide nanofiltration (NF) and reverse osmosis (RO) membranes comprising circulating a low concentration of water soluble monomers and an initiating redox couple in an aqueous solvent, without transverse pressure over the surface of the membrane thereby effecting a free-radical graft polymerization on the surface of the membrane.
    Type: Grant
    Filed: September 4, 2005
    Date of Patent: March 16, 2010
    Assignee: Ben Gurion University of the Negev Research and Development Authority
    Inventors: Sophia Belfer, Rosalia Fainstein, Luba Kesselman, Charles Linder
  • Process for Improving Membranes
    Publication number: 20080269417
    Abstract: The invention provides a process for improving the antifouling properties and for increasing the selectivity of commercial composite polyamide nanofiltration (NF) and reverse osmosis (RO) membranes comprising circulating a low concentration of water soluble monomers and an initiating redox couple in an aqueous solvent, without transverse pressure over the surface of the membrane thereby effecting a free-radical graft polymerization on the surface of the membrane.
    Type: Application
    Filed: September 4, 2005
    Publication date: October 30, 2008
    Applicant: BEN GURION UNIV. OF THE NEGEV RESEA. & DEV. AUTH.
    Inventors: Sophia Belfer, Rosalia Fainstein, Luba Kesselman, Charles Linder