Patents by Inventor Kiyoaki Hisada

Kiyoaki Hisada 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).

  • Cold working steel bar and wire rod produced by continuous casting
    Patent number: 3990887
    Abstract: A method of producing steel bars and steel wire which can be cold worked is disclosed.A steel furnace melt having a carbon content of between 0.01 to 0.25% is first deoxidized with manganese, aluminum and silicon in amounts so as to obtain a melt of the following composition:0.01- 0.25% of C0.02-0.08% of Si0.20-0.60% of Mn0.002-0.015% of AlLess than 0.009% of S, andBetween 50-150 ppm of oxygen, with the balance being iron.The melt is then continuously cast and the cast product is rolled into bars or wires.
    Type: Grant
    Filed: October 29, 1974
    Date of Patent: November 9, 1976
    Assignee: Nippon Steel Corporation
    Inventor: Kiyoaki Hisada