Patents by Inventor Ujihiro Nishike

Ujihiro Nishike 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).

  • Method for producing low iron loss grain oriented silicon steel sheets
    Patent number: 5185043
    Abstract: A grain oriented silicon steel sheet having a low iron loss and not causing degradation of properties even through strain relief annealing is produced by applying ultrasonic vibrations to the surface of the sheet after secondary recrystallization annealing.
    Type: Grant
    Filed: October 31, 1990
    Date of Patent: February 9, 1993
    Assignee: Kawasaki Steel Corporation
    Inventors: Ujihiro Nishike, Shigeko Sujita, Tsuneo Nagamine
  • Silicon steel sheets having low iron loss and method of producing the same
    Patent number: 5125991
    Abstract: A silicon-containing steel sheet having a low iron loss has such a crystal structure that crystal grains having an inclination angle of {110} face of not more than 10.degree. with respect to the sheet surface are included in an amount of not less than 80 vol % and exhibit a graining surface pattern in which boundaries of these crystal grains form stepwise difference or groove of not less than 0.4 .mu.m as a maximum height. This sheet is produced by subjecting a grain oriented silicon steel sheet after final annealing to a magnetically smoothening treatment by electrolysis in an squeous solution containing at least one of water soluble halides.
    Type: Grant
    Filed: October 19, 1990
    Date of Patent: June 30, 1992
    Assignee: Kawasaki Steel Corporation
    Inventors: Hirotake Ishitobi, Ujihiro Nishike, Shigeko Sujita, Tikara Kami, Yasuhiro Kobayashi