Patents by Inventor Satoshi Koseki

Satoshi Koseki 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 of producing silicon steel hot rolled sheets having excellent surface properties
    Patent number: 5572892
    Abstract: In a production method for silicon steel hot rolled sheets by subjecting a slab of silicon steel to a rough hot rolling through high-temperature heating and then subjecting to a finish hot rolling, rolling at the first stand in the finish hot rolling is carried out so that a relation of thickness at entrance side of the stand t.sub.F1 (mm), thickness at delivery side thereof t.sub.F2 (mm), surface temperature of steel sheet at gripping T.sub.F0 (.degree. C.) and temperature at the depth of (t.sub.F1 -t.sub.F2)/2 (mm) from the surface of the steel sheet at gripping T.sub.F1 satisfies the following equation:(T.sub.F1 -T.sub.F0)/{(t.sub.F1 -t.sub.F2)/2}.ltoreq.10+t.sub.F1 /10 (.degree.C./mm).Thus, surface defect and surface cracks can be prevented in the hot rolling to provide silicon steel sheets having excellent surface properties.
    Type: Grant
    Filed: August 25, 1994
    Date of Patent: November 12, 1996
    Assignee: Kawasaki Steel Corporation
    Inventors: Mineo Muraki, Toshito Takamiya, Satoshi Koseki