Patents by Inventor Kazuo Hamai

Kazuo Hamai 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).

  • Patent number: 6145581
    Abstract: While an insufficient lubricating effect caused by lack of lubricant is prevented and also while contamination of molten metal and insertion of molten metal caused by excessive feed of lubricant are prevented, a lubricating effect can be provided and continuous casting can be conducted over a long period of time. Molten metal is poured into a molten metal pool formed by a pair of cooling drums and side dams. The thus poured molten metal is cooled and solidified on circumferential surfaces of the cooling drums, so that a strip can be produced. In the above continuous strip casting method, the side dam is composed in such a manner that a portion of the ceramic plate on the inlet side in the rotational direction of the cooling drum is chamfered, wherein the portion comes into contact with an end surface of the cooling drum.
    Type: Grant
    Filed: October 14, 1998
    Date of Patent: November 14, 2000
    Assignee: Nippon Steel Corporation
    Inventors: Tomohide Takeuchi, Tatsumi Saito, Kazuo Hamai, Kiyoshi Sawano, Masanobu Egashira
  • Patent number: 4416999
    Abstract: Refractory moldings or repairing deposits formed by flame projection, composed of a solidified phase formed from fused fine refractory particles and nonfused coarse refractory particles dispersed in the solidified phase.The moldings or deposits have high thermal shock resistance and erosion resistance.They are produced by flame-projecting fine refractory particles and coarse refractory particles together into a mold or onto a substrate, e.g. onto a portion of a furnace to be repaired.
    Type: Grant
    Filed: August 5, 1981
    Date of Patent: November 22, 1983
    Assignees: Nippon Steel Corporation, Kurosaki Yogyo Co., Ltd.
    Inventors: Fukuoka Hiromi, Masataka Matsuo, Kazuo Hamai, Tokuaki Hatta, Mituo Sugawara