Patents by Inventor Hideaki Kitoh

Hideaki Kitoh 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).

  • Method of manufacturing porous membrane and porous membrane manufactured by the same method
    Patent number: 4965291
    Abstract: A method of manufacturing a porous membrane by dissolving vinylidene fluoride polymer in a good solvent such as acetone and then causing solidification of the resultant solution in a non-solvent. The dissolution of the vinylidene fluoride polymer in the solvent is done in a predetermined pressure condition, namely 0.1 kg/cm.sup.2, preferably in a range of 0.5 to 5.0 kg/cm.sup.2.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: October 23, 1990
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Hideaki Kitoh, Yukio Seita, Noriyuki Koyama, Shinsuke Yokomachi