Patents Assigned to Domnick Hunter Ilblry Limited
  • Microporous membrane
    Patent number: 4853127
    Abstract: A microporous membrane for use in filtration, the membrane being formed of a polyetherimide derived from an aromatic bis (ether anydride) and an organic diamine. The membrane is formed from a casting liquid comprising the polyetherimide together with a solvent and a non-solvent, forming a thin layer of the liquid and extracting at least part of the solvent and non-solvent to form the required membrane. The membrane may be modified by the inclusion of additional chemical moieties.
    Type: Grant
    Filed: December 2, 1987
    Date of Patent: August 1, 1989
    Assignee: Domnick Hunter Ilblry Limited
    Inventors: Minh S. Le, John S. Wilkes