Patents by Inventor Asim K. Ghosh

Asim K. Ghosh 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).

  • Micro-and nanocomposite support structures for reverse osmosis thin film membranes
    Patent number: 8029857
    Abstract: Disclosed are compaction resistant thin film composite membranes having a porous polymeric support; a semi-permeable polymer film polymerized on the porous polymeric support; and particles, of a size in the range of microparticles and nanoparticles, dispersed in the porous polymeric support. Also disclosed are methods of making compaction resistant membranes by polymerizing a polymer film on a porous polymeric support with particles of a size in the range of microparticles and nanoparticles dispersed therein, the particles having been selected to improve flux flow characteristics over time of the semi-permeable membrane. Also disclosed are methods of purifying water using the disclosed membranes. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: October 4, 2011
    Assignee: The Regents of the University of California
    Inventors: Eric M. V. Hoek, Asim K. Ghosh, Jodie M. Nygaard
  • NANOCOMPOSITE MEMBRANES AND METHODS OF MAKING AND USING SAME
    Publication number: 20100224555
    Abstract: Disclosed are composite membranes for removing contaminants from water, the membranes comprising a water-permeable thin film polymerized on a porous support membrane and, optionally, a mixture, including a surface coating material having a different chemical composition than the thin film, coated on the thin film. In one aspect, one or more layers of the composite membranes further comprise nanoparticles. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Application
    Filed: September 20, 2008
    Publication date: September 9, 2010
    Inventors: Eric M.V. Hoek, Asim K. Ghosh
  • MICRO-AND NANOCOMPOSITE SUPPORT STRUCTURES FOR REVERSE OSMOSIS THIN FILM MEMBRANES
    Publication number: 20080237126
    Abstract: Disclosed are compaction resistant thin film composite membranes having a porous polymeric support; a semi-permeable polymer film polymerized on the porous polymeric support; and particles, of a size in the range of microparticles and nanoparticles, dispersed in the porous polymeric support. Also disclosed are methods of making compaction resistant membranes by polymerizing a polymer film on a porous polymeric support with particles of a size in the range of microparticles and nanoparticles dispersed therein, the particles having been selected to improve flux flow characteristics over time of the semi-permeable membrane. Also disclosed are methods of purifying water using the disclosed membranes. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Application
    Filed: October 29, 2007
    Publication date: October 2, 2008
    Inventors: Eric M.V. Hoek, Asim K. Ghosh, Jodie M. Nygaard