Patents Assigned to Osaka Gasu Kabushiki Kaisha (Osaka Gas Company Ltd.)
  • Protective cover for a thermoresponsive tube
    Patent number: 4245674
    Abstract: Thermoshrinkable or thermoexpansive tubes for corrosion prevention or lin of piping are disclosed which have their inner and/or outer walls covered with at least one protective cover to keep them clean from dust, dirt, water or any other foreign matter which might interfere with adhesion to the pipe connection, thus causing corrosion or poor lining.
    Type: Grant
    Filed: October 19, 1979
    Date of Patent: January 20, 1981
    Assignees: Nitto Denki Kogyo Kabushiki Kaisha (Nitto Electric Industrial Co. Ltd.), Osaka Gasu Kabushiki Kaisha (Osaka Gas Company Ltd.)
    Inventors: Syuichi Nakamura, Satoshi Ogawa, Yasuhiro Moriyama, Tomihisa Ueno, Minoru Komura