Patents by Inventor Keiichi Shibata

Keiichi Shibata 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).

  • Tube for thermal cracking or reforming hydrocarbon
    Patent number: 4444731
    Abstract: A reactor tube for thermally cracking or reforming hydrocarbons comprising an outer tube member made of Ni-containing heat resisting material and having enhanced mechanical strength with a large wall thickness, and an inner tube member of small wall thickness fitted in the outer tube member and made of heat resisting material free from Ni or with a low Ni content. The inner and outer tube members have been subjected to a diffusion treatment with a thin coating of Ni-P solid solution provided at the junction therebetween and thereby bonded together.
    Type: Grant
    Filed: February 25, 1982
    Date of Patent: April 24, 1984
    Assignees: Kubota Ltd., Toyo Engineering Corporation
    Inventors: Keizo Konoki, Takanobu Shinohara, Ikuyoshi Kochi, Keiichi Shibata, Hisakatsu Nishihara, Toshiaki Morichika, Junichi Sugitani, Koji Tsuchida