Patents by Inventor Helmut Kranenberg

Helmut Kranenberg 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 for controlling the temperature of steel during hot-rolling on a continuous hot-rolling mill
    Patent number: 3981752
    Abstract: Method for hot-rolling carbon and alloy steels in a continuous hot-rolling mill including spraying water onto the surface of the steels at selected locations in the continuous hot-rolling mill during hot-rolling of the steels in order to control the temperature of the steels. The hot-rolled steels off-the-mill have an integrated mean temperature of not more than about 1750.degree. F. and can have a surface temperature of about 1700.degree. F. The as-rolled steel products produced by the method have uniform metallurgical characteristics. The scale which forms on the surface of the steels during air-cooling to ambient temperature is uniform, smooth, fine-textured and relatively thin.
    Type: Grant
    Filed: December 10, 1974
    Date of Patent: September 21, 1976
    Assignee: Bethlehem Steel Corporation
    Inventors: Helmut Kranenberg, Richard S. Hostetter, Jr.
  • As-worked, heat treated cold-workable hypoeutectoid steel
    Patent number: RE29240
    Abstract: Hypoeutectoid steels are worked within a temperature range of between the A.sub.1 temperature to 150.degree. F. below the A.sub.1 temperature. The cross-sectional area of the steels is reduced by not less than 60% during working. After working, the steels can be heated to about the A.sub.1 temperature to obtain the optimum hardness and ductility for cold-working.The as-worked structure and the heat treated structure are also described.
    Type: Grant
    Filed: November 28, 1975
    Date of Patent: May 31, 1977
    Assignee: Bethlehem Steel Corporation
    Inventor: Helmut Kranenberg