Patents by Inventor Tadaaki Miyano

Tadaaki Miyano 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).

  • Process for preparing modified porous membrane
    Patent number: 5273657
    Abstract: A modified porous membrane can be prepared by dissolving an aromatic polymer having a thioether group in an organic solvent, forming membrane of the aromatic polymer from the resultant solution by phase conversion and oxidizing the formed membrane. This modified porous membrane can effectively be utilized in a filtration method wherein ultrafiltration, reverse osmosis, fine filtration, gas separation, vapor permeation or pervaporation is conducted.
    Type: Grant
    Filed: December 11, 1990
    Date of Patent: December 28, 1993
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Naoki Nakashima, Tadaaki Miyano, Motoshi Ishikura, Yoshihide Ozawa