Patents by Inventor Juichi Nakazawa

Juichi Nakazawa 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).

  • Structure for preventing frost heave damage to an underground structure and a method of installing the same
    Patent number: 6309142
    Abstract: A durable frost heave damage preventive structure of underground structures applicable easily and at low cost to many different kinds of underground structures. The frost heave damage preventive structure includes a plate-like reaction member (7) provided at the bottom of an underground structure (1) approximately in parallel to a freezing front in the ground.
    Type: Grant
    Filed: May 22, 1997
    Date of Patent: October 30, 2001
    Assignee: Konoike Construction Co., Ltd.
    Inventors: Kazuo Takeda, Akihiko Okamura, Juichi Nakazawa, Akiyoshi Otobe