Patents by Inventor Hideo Kakegawa

Hideo Kakegawa 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).

  • Injection materials for railroad track beds
    Patent number: 4267085
    Abstract: In a railroad track bed an injected layer is formed between the railroad ties and the roadbed so as to protect the latter. The injected layer is composed of an injection material injected through openings formed in the tie. The injection material has a viscosity below 30 poise at a temperature not higher than 200.degree. C. before hardening, and when hardened it has a compressive stress at 10% strain of 0.4 to 30kg/cm.sup.2 at a compressive strain rate at 40.degree. C. of 1.5% per minute.
    Type: Grant
    Filed: March 29, 1979
    Date of Patent: May 12, 1981
    Assignees: Japanese National Railways, Nippon Oil Company, Ltd.
    Inventors: Yasuo Katoh, Hideo Kakegawa, Shigeyuki Hayashi, Tadakazu Yamashita
  • Railroad track bed using injection materials and method therefor
    Patent number: 4156440
    Abstract: In a railroad track bed, an injection layer is formed between the railroad ties and the raodbed so as to protect the latter. The injected layer is composed of an injection material injected through openings formed in the tie. The injection material has a viscosity below 30 poise at a temperature not higher than 200.degree. C. before hardening, and when hardened it has a compressive stress at 10% strain of 0.4 to 30 kg/cm.sup.2 at a compressive strain rate at 40.degree. C. of 1.5% per minute.
    Type: Grant
    Filed: May 24, 1977
    Date of Patent: May 29, 1979
    Assignees: Japanese National Railways, Nippon Oil Company Ltd.
    Inventors: Yasuo Katoh, Hideo Kakegawa, Shigeyuki Hayashi, Tadakazu Yamashita