Patents by Inventor Hideki Nawa

Hideki Nawa 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 for producing a composite membrane and the composite membrane
    Patent number: 5034130
    Abstract: The invention is a method for producing a composite membrane useful as a functional membrane which comprises mixing polyamide and polyester in a solvent to obtain a mixed solution and preparing the membrane while removing the solvent from the mixed solution under an electric field and the composite membrane obtained by the above method.
    Type: Grant
    Filed: October 12, 1989
    Date of Patent: July 23, 1991
    Assignee: Nippon Oil and Fats Co., Ltd.
    Inventors: Yoshiharu Nakamura, Teruo Hori, Hideki Nawa, Taizo Igarashi