Patents by Inventor Sigeru Asako

Sigeru Asako 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).

  • Selectively gas-permeable composite membrane and process for production thereof
    Patent number: 4483901
    Abstract: A selectively gas-permeable composite membrane and a process for producing said composite membrane are described. The composite membrane comprises a polymeric material support and a thin membrane deposited on the support, said thin membrane being obtained by glow discharge plasma polymerization of an organosilane compound containing at least one double bond or triple bond. Alternatively, the composite membrane comprises a polymeric material support having an average pore diameter of at least 0.1 micron, a hardened or cross-linked polyorganosiloxane layer on the support, and a thin membrane on the polyorganosiloxane layer, said thin membrane being obtained by plasma polymerization due to glow discharge of an organosilane compound containing at least one double bond or triple bond.
    Type: Grant
    Filed: April 18, 1983
    Date of Patent: November 20, 1984
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Koichi Okita, Sigeru Asako