Patents by Inventor Hagit SHALEV

Hagit SHALEV 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).

  • Base stable semipermeable membrane and methods thereof
    Patent number: 10335745
    Abstract: The present invention provides a semipermeable membrane having enhanced alkaline stability and a method of forming a semipermeable membrane having enhanced alkaline stability, comprising steps of: providing an ultrafiltration (UF) base membrane, immersing said UF membrane in a solution comprising at least one substance selected from the group consisting of a polymer preferably polyethylenimine (PEI), a condensate solution and a mixture thereof, thereby forming reactive moieties upon said UF membrane, and forming at least one first layer upon at least portion of said UF base support membrane by immersing said UF base support membrane of step (b) in a solution comprising at least one ingredient selected from the group consisting of polymer preferably polyethylenimine (PEI), condensate solution and a mixture thereof thereby forming a cross-linked skin on the surface of said base membrane.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: July 2, 2019
    Assignee: AMS TECHNOLOGIES INT. (2012) LTD
    Inventors: Polina Lapido, Vera Ginzburg, Hagit Shalev, Boris Ginzburg
  • A BASE STABLE SEMIPERMEABLE MEMBRANE AND METHODS THEREOF
    Publication number: 20160207010
    Abstract: The present invention provides a semipermeable membrane having enhanced alkaline stability and a method of forming a semipermeable membrane having enhanced alkaline stability, comprising steps of: providing an ultrafiltration (UF) base membrane, immersing said UF membrane in a solution comprising at least one substance selected from the group consisting of a polymer preferably polyethylenimine (PEI), a condensate solution and a mixture thereof, thereby forming reactive moieties upon said UF membrane, and forming at least one first layer upon at least portion of said UF base support membrane by immersing said UF base support membrane of step (b) in a solution comprising at least one ingredient selected from the group consisting of polymer preferably polyethylenimine (PEI), condensate solution and a mixture thereof thereby forming a cross-linked skin on the surface of said base membrane.
    Type: Application
    Filed: September 18, 2014
    Publication date: July 21, 2016
    Applicant: AMS TECHNOLOGIES INT. (2012) LTD
    Inventors: Polina LAPIDO, Vera GINZBURG, Hagit SHALEV, Boris GINZBURG