Patents by Inventor Hiroto Arata

Hiroto Arata 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).

  • Rotary brake disc
    Patent number: 4902473
    Abstract: A brake disc material which does not crack under a great braking action, such as in a large-sized truck, consisting of 0.03 percent to 1 percent of carbon, 1.2 percent to 20 percent of chromium, and 0.1 percent to 1 percent of molybdenum, the balance being essentially iron.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: February 20, 1990
    Assignee: Nippon Steel Corporation
    Inventors: Hiroto Arata, Kenji Shiga, Daihachiro Sakurai, Kazuo Fujisawa, Isao Souma, Yusiyo Watanabe, Akira Tanaka
  • Stave cooler
    Patent number: 4620507
    Abstract: A cast steel stave cooler comprising a carbon steel cooling pipe having a roughened surface and having a coating thereon, and a cast steel embedding the cooling pipe therein. The cast steel contains 10 to 25% Cr and has a very reduced liquid-solid zone so as to prevent fusion of the cooling pipe during the casting. The cooling pipe is provided with fins which are integratedly welded to the cast steel.
    Type: Grant
    Filed: March 1, 1982
    Date of Patent: November 4, 1986
    Inventors: Hiromichi Saito, Hiroto Arata, Kazuo Kimura, Kazuo Fujisawa, Fumihiro Yamamoto