Patents by Inventor Tikara Kami

Tikara Kami 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).

  • 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