Patents by Inventor Takeo Namazugoshi

Takeo Namazugoshi 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).

  • Pipeline coating method
    Patent number: 4419163
    Abstract: A one step method of applying a sealant onto the inside surface of a pipe, such as a gas pipe, to repair any defective portions that are likely to cause a leak and should be repaired. The sealant is applied and it is then dried and solidified to seal the leak portions of the pipe. Preferably, an injection means is used for supplying the sealant in a cylindrical shape so that every portion of the inner surface of the pipe will be coated.
    Type: Grant
    Filed: September 30, 1981
    Date of Patent: December 6, 1983
    Assignee: Osaka Gas, Ltd.
    Inventors: Mitsuo Yamamoto, Takeo Namazugoshi, Hiroyoshi Seto