Patents by Inventor Yasuhide Ohno

Yasuhide Ohno 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).

  • Prevention of cracking of continuously cast steel slabs containing boron
    Patent number: 4379482
    Abstract: Production of boron-containing steel slabs free from surface defects by continuous casting, particularly prevention of the slab surface crackings by cooling the slab with a specific cooling rate through the temperature range from the melting point to 900.degree. C. so as to prevent boron-containing compounds such as BN from precipitating along the austenite grain boundary. Great advantage over the conventional art is that boron-containing molten steels which could not be continuously cast can be successfully continuously cast into slabs free from surface defects.
    Type: Grant
    Filed: December 2, 1980
    Date of Patent: April 12, 1983
    Assignee: Nippon Steel Corporation
    Inventors: Hiroo Suzuki, Koichi Yamamoto, Yasuhide Ohno, Kou Miyamura