Patents by Inventor Akihiko Natsume

Akihiko Natsume 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 a resinous tank
    Patent number: 6375891
    Abstract: A tool with a blade is provided at a molding die and set so as to protrude further inwardly than the molding surface of the molding die. When a parison is expanded within the molding dies, the parison is brought into close contact with the outer peripheral wall of the tool. A hollow body is formed in a state in which the inner wall surface of a through-hole is molded by the outer peripheral wall of the tool. Thereafter, the tool is advanced and a cut-out piece is excised. A washer tank is thereby formed. The inner wall surface of the through-hole is not a cut surface and the through-hole is formed in accordance with the outer peripheral wall of the tool.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: April 23, 2002
    Assignee: Asmo Co., Ltd.
    Inventors: Makoto Nishikawa, Akihiko Natsume, Kouichi Jinno