Patents by Inventor Hassam Mahmud

Hassam Mahmud 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).

  • Membrane composition and method of preparation
    Patent number: 5954966
    Abstract: The present invention relates to membranes useful in the separation of water from a solution containing volatile organic compounds and water. The membranes may be used in dehydrating an organic/water mixture to purify an organic when an organic is of interest or, alternatively, producing pure water from an organic/water mixture when clean water is of interest. The membranes include a hydrophilic base polymer, an optional pore-forming polymer and a surface modifying macromolecule (SMM) which imparts surface hydrophobicity to the membrane.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: September 21, 1999
    Assignees: University of Ottawa, Fielding Chemicals Limited
    Inventors: Takeshi Matsuura, Paul Santerre, Roberto Martin Narbaitz, Vu Anh Pham, Yi Fang, Hassam Mahmud, Fakhir Baig