Patents by Inventor Setsuo Otsuka

Setsuo Otsuka 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 producing, by continuous annealing, soft blackplate for surface treatment
    Patent number: 4698102
    Abstract: Steel blackplate for surface treatment, having a soft temper degree of T-3 or less, and improved fluting resistance is produced by the combination of a chemical composition of 0.01% to 0.08% carbon, 0.015% or less phosphorus, without titanium and niobium; steelmaking without vacuum-degassing; a low slab-heating temperature of 1240.degree. C. or less; a coiling temperature of 620.degree. C. to 710.degree. C.; continuous annealing having a heat pattern to decrease the solute carbon and nitrogen; and skin-pass rolling.
    Type: Grant
    Filed: July 3, 1985
    Date of Patent: October 6, 1987
    Assignee: Nippon Steel Corporation
    Inventors: Kuniaki Maruoka, Nobuyuki Takahashi, Senkichi Tujimura, Yasuhiko Yamashita, Setsuo Otsuka, Isao Oohasi, Takeo Motoyama