Patents by Inventor Oksana Penezina

Oksana Penezina 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).

  • Porous composite membrane and method for making the same
    Patent number: 7628917
    Abstract: The invention provides composite porous membranes comprising a porous hydrophobic substrate coated with difunctional surface-modifying molecules. The difunctional surface-modifying molecules provide a hydrophilic surface without forming branches of interconnected polymer molecules in the pores. The invention also provides a method for making composite porous membranes, such as a composite hydrophilic membrane with reduced concentration of surface modifying molecules required to coat a hydrophobic substrate.
    Type: Grant
    Filed: August 22, 2003
    Date of Patent: December 8, 2009
    Assignee: Whatman, Inc.
    Inventors: Oksana Penezina, Manuel M. Pacheco, Dean T. Tsou
  • Porous composite membrane and method for making the same
    Publication number: 20040242714
    Abstract: The invention provides composite porous membranes comprising a porous hydrophobic substrate coated with difunctional surface-modifying molecules. The difunctional surface-modifying molecules provide a hydrophilic surface without forming branches of interconnected polymer molecules in the pores. The invention also provides a method for making composite porous membranes, such as a composite hydrophilic membrane with reduced concentration of surface modifying molecules required to coat a hydrophobic substrate.
    Type: Application
    Filed: August 22, 2003
    Publication date: December 2, 2004
    Inventors: Oksana Penezina, Manuel M. Pacheco, Dean T. Tsou