Patents by Inventor Aya Oya

Aya Oya 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).

  • Microporous modified-polytetrafluoroethylene membrane, porous-modified-polytetrafluoroethylene-membrane composite and production process thereof, and separation membrane element
    Patent number: 9421499
    Abstract: The invention offers a microporous modified-polytetrafluoroethylene membrane that is a microporous membrane having a significantly small pore diameter and narrow pore-diameter distribution and that can remove microscopic foreign particles at high efficiency when used as a filtration membrane.
    Type: Grant
    Filed: January 21, 2013
    Date of Patent: August 23, 2016
    Assignee: SUMITOMO ELECTRIC FINE POLYMER, INC.
    Inventors: Fumihiro Hayashi, Aya Oya, Atsushi Uno
  • POROUS POLYTETRAFLUOROETHYLENE MEMBRANE, POROUS-POLYTETRAFLUOROETHYLENE-MEMBRANE COMPOSITE, AND SEPARATION MEMBRANE ELEMENT
    Publication number: 20140339155
    Abstract: The invention offers a porous polytetrafluoroethylene membrane, which is a porous resin membrane produced by the following steps: preparing multiple types of polytetrafluoroethylene each having a different quantity of heat of fusion; using each of the multiple types of polytetrafluoroethylene to form a membrane composed of a fluororesin consisting mainly of polytetrafluoroethylene; heating each membrane to its melting point or above to bake it, so that multiple types of nonporous resin membranes are produced; stacking the multiple types of nonporous resin membranes in the order of the magnitude of the quantity of heat of fusion of the polytetrafluoroethylene used to produce each of the nonporous resin membranes; bonding the stacked membranes with each other; and stretching the bonded membranes to form the porous resin membrane. The porous polytetrafluoroethylene membrane has a mean flow pore diameter of 50 nm or less.
    Type: Application
    Filed: December 4, 2012
    Publication date: November 20, 2014
    Applicant: Sumitomo Electric Fine Polymer, Inc.
    Inventors: Fumihiro Hayashi, Aya Oya, Atsushi Uno
  • MICROPOROUS MODIFIED-POLYTETRAFLUOROETHYLENE MEMBRANE, POROUS-MODIFIED-POLYTETRAFLUOROETHYLENE-MEMBRANE COMPOSITE AND PRODUCTION PROCESS THEREOF, AND SEPARATION MEMBRANE ELEMENT
    Publication number: 20140083929
    Abstract: The invention offers a microporous modified-polytetrafluoroethylene membrane that is a microporous membrane having a significantly small pore diameter and narrow pore-diameter distribution and that can remove microscopic foreign particles at high efficiency when used as a filtration membrane.
    Type: Application
    Filed: January 21, 2013
    Publication date: March 27, 2014
    Inventors: Fumihiro Hayashi, Aya Oya, Atsushi Uno