Patents by Inventor Yusiyo Watanabe

Yusiyo Watanabe 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
  • Sealing device for hydraulically or pneumatically operated equipment
    Patent number: 4017089
    Abstract: A sealing boot for hydraulically or pneumatically operated equipments comprising an external portion which is pressed by a resilient ring into fitted engagement with a circumferential groove provided in a cylinder body, an internal portion which is tightly attached to the outer edge of a piston and a flexible portion which connects said external portion to said internal portion, the external portion being provided with a recess which is arranged in the direction of the width of the external portion to form a continuous curve.
    Type: Grant
    Filed: July 29, 1975
    Date of Patent: April 12, 1977
    Assignee: Akebono Brake Industry Co., Ltd.
    Inventors: Masayuki Kurata, Yusiyo Watanabe