Patents by Inventor Tetsui Suetoshi

Tetsui Suetoshi 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 internally lining an installed pipe
    Patent number: 4325772
    Abstract: A method of internally lining an installed pipe, which may be used for various types of pipelines such as those for transmitting town gas, natural gas, petroleum, and water. According to the invention, a flexible liner tube is placed inside an installed pipe, and then a liquid adhesive agent is introduced between the pipe and the tube. In this condition, an object is passed through the tube whereby the liquid adhesive agent acts to make the tube adhere to the interior wall of the pipe.
    Type: Grant
    Filed: November 24, 1980
    Date of Patent: April 20, 1982
    Assignee: Osaka Gas Kabushiki Kaisha
    Inventors: Tetsui Suetoshi, Munetaka Kinugasa, Koichi Hosoya, Mitsuo Yamamoto