Reverse osmosis membrane compositions

Patents Grantslast 30 patents

  • Information Patent Grant

    Desalination process

    • Patent number 5,512,176
    • Issue date Apr 30, 1996
    • Saudi Basic Industries Corporation
    • E. Allan Blair
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Desalination process

    • Patent number 5,354,835
    • Issue date Oct 11, 1994
    • Saudi Basic Industries Corporation
    • E. Allan Blair
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Preparation of permselective composite membrane

    • Patent number 4,260,652
    • Issue date Apr 7, 1981
    • Teijin Limited
    • Yutaka Taketani
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Product

    • Patent number 4,039,499
    • Issue date Aug 2, 1977
    • Standard Oil Company
    • Edward F. Steigelmann
    • D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
  • Information Patent Grant

    Permselective polymeric membranes of organic polyamide or polyhydra...

    • Patent number 3,993,625
    • Issue date Nov 23, 1976
    • Toray Industries, Inc.
    • Masaru Kurihara
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Permselective polymeric membrane prepared from polybenzimidazoles

    • Patent number 3,951,920
    • Issue date Apr 20, 1976
    • Teijin Limited
    • Masao Senoo
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Semipermeable membrane and process for the preparation thereof

    • Patent number 3,950,257
    • Issue date Apr 13, 1976
    • Daicel Ltd.
    • Kiyoshi Ishii
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Process for forming hollow fibers

    • Patent number 3,940,469
    • Issue date Feb 24, 1976
    • Standard Oil Company
    • Edward F. Steigelmann
    • D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
  • Information Patent Grant

    Regular copolyamides as desalination membranes

    • Patent number 3,935,172
    • Issue date Jan 27, 1976
    • The United States of America as represented by the Secretary of the Interior
    • Otto F. Vogl
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...