Patents by Inventor Masahiko Yoshini

Masahiko Yoshini 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 making non-oriented high silicon steel sheet
    Patent number: 4986341
    Abstract: The present invention relates to a process for making non-oriented high Si steel sheet without problems during the sequence from the step of making molten steel to the step of rolling to final sheet thickness. An ingot (or a continuously cast piece) of high Si steel (containing 4.0 to 7.0% Si and specified with Al, Mn, C and P) is subjected to slabbing-hot rolling (or else directly slab rolling-hot rolling) and subsequently the hot rolled steel is reduced to thin thickness. The steel material is maintained at temperature of more than a determined temperature from the step of making molten steel to the step of hot rolling. In the step of hot rolling, information regarding finish rolling conditions and coiling conditions is used to provide structure suitable for the subsequent thin rolling. The hot rolled steel is then warm-rolled to the required thickness.
    Type: Grant
    Filed: December 15, 1988
    Date of Patent: January 22, 1991
    Assignee: Nippon Kokan Kabushiki Kaisha
    Inventors: Sadakazu Masuda, Fumio Fujita, Masamoto Kamata, Masahiko Yoshini, Takashi Ariizumi, Yuji Okami, Yoshikazu Takada, Junichi Inagaki