Patents by Inventor Takayasu Isono

Takayasu Isono 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).

  • Pipe manufacturing method and inner pipe of double pipe
    Publication number: 20060219357
    Abstract: The present invention suggests a pipe manufacturing method by new plastic bonding with high bonding power and adopted to a thin pipe. With regard to the pipe manufacturing method that bonding fins 3a and 3b are provided at edges 2a and 2b of plural split pipes 2A and 2B split along longer direction and the split pipes 2A and 2B are united by caulking the bonding fins 3a and 3b of the split pipes 2A and 2B, the bonding fin 3a is wound around the other bonding fin 3b for caulking them so as to form creases 35 circularly centering on an axis of the roll form.
    Type: Application
    Filed: March 22, 2006
    Publication date: October 5, 2006
    Inventors: Takayasu Isono, Masatsune Kondo, Yasuhiro Nobata