Patents by Inventor Kunio Shiosaka

Kunio Shiosaka 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).

  • Underground dam
    Patent number: 5758991
    Abstract: An underground dam is formed of a water flow preventing wall for blocking a water permeable layer of soil to form a storing portion for storing underground water on an upper stream side relative to the water flow preventing wall. The water flow preventing wall has an opening, and an opening-closing device for opening and closing the opening is provided. Thus, the underground water on the upper stream side can be supplied to a down stream side through the opening.
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: June 2, 1998
    Assignees: Environmental Assessment Center Co., Ltd, Okada Company Ltd.
    Inventor: Kunio Shiosaka