Patents by Inventor Kebin Ji

Kebin Ji 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).

  • Process for manufacturing high strength railroad rails
    Patent number: 5004510
    Abstract: Steel rails having reduced camber and improved wear resistance provided by enhanced rail head strength and hardness level decreasing uniformly from the rail head surface to a depth of 15 to 25 mm. are produced by a method and apparatus in which the rail is preheated below the A.sub.c3 temperature, heated above the A.sub.c3, cooled in air, cooled three dimensionally with compressed air directed on the top and at an angle of 1-10 degrees onto the sides of the rail head, and further cooled with liquid coolant.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: April 2, 1991
    Assignee: PanZhiHua Iron & Steel Co.
    Inventors: Meng W. Yu, Shihuai Su, Yue Z. Chen, Zheng, Ticheng, Kebin Ji, Shou R. Ling, Jian C. Lin, Jianhui Deng, Kunwu Zhang