Patents by Inventor Tsuyoshi Ozaki

Tsuyoshi Ozaki 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).

  • Meter dial illuminating device
    Patent number: 4771368
    Abstract: A meter dial illuminating device for illuminating a dial by means of a light incident upon a back surface thereof. The dial is formed of a light transmitting material except at a portion where characters and a scale are indicated. As a result, the front surface of the dial is illuminated by the light incident upon the back surface of the light guiding plate and transmitted therethrough.
    Type: Grant
    Filed: February 13, 1987
    Date of Patent: September 13, 1988
    Assignee: Yazaki Corporation
    Inventors: Sakae Tsukamoto, Hiroyoshi Kenmotsu, Tsuyoshi Ozaki, Takahiro Masuda
  • Continuous melting, refining and casting process
    Patent number: 4419128
    Abstract: In a continuous melting, refining and casting process which comprises, substantially in series, a step of melting and carburizing steel scrap, iron scrap and/or reduced iron as a raw material in a combustion-type melting furnace, a refining step by blowing of oxygen, a refining and holding step and a continuous casting step, the improvement wherein an intermediate holding step in a holding furnace is provided between the melting and carburizing step and the refining step so that the molten metal tapped from the melting furnace is held in the intermediate holding furnace for a certain period of time and continuously fed to the refining step at a predetermined flow rate, and wherein the refining conditions in the refining step are controlled according to one or more characteristics of the molten metal in the intermediate holding step.
    Type: Grant
    Filed: March 17, 1982
    Date of Patent: December 6, 1983
    Assignee: National Research Institute for Metals
    Inventors: Ryuichi Nakagawa, Shiro Yoshimatsu, Akira Fukuzawa, Akira Sato, Tsuyoshi Ozaki
  • Electric arc furnace for continuous melting of directly reduced iron or directly reduced iron ore
    Patent number: 4071687
    Abstract: A direct-heat arc furnace for the production of molten iron by continuously melting and reducing directly reduced iron or directly reduced iron ore, which comprises electrodes fixed in position and a furnace body to be driven so that the relative position of arc spots at the tips of the electrodes and the surface of the molten material in the furnace move continuously, and in which the shape and moving path of the furnace body are such that the range of tapping port movement is minimized and the melting of the feed stock and the tapping of the molten iron are performed continuously.
    Type: Grant
    Filed: March 15, 1976
    Date of Patent: January 31, 1978
    Assignee: National Research Institute for Metals
    Inventors: Ryuichi Nakagawa, Shiro Yoshimatsu, Takuya Ueda, Akira Fukuzawa, Tsuyoshi Ozaki, Akira Sato, Tatsuro Mitsui
  • Process for regenerating or producing steel from steel scrap or reduced iron
    Patent number: 4023962
    Abstract: A process for regenerating steel scrap by melting and refining it, the improvement wherein carbon is added to molten scrap steel melt in an amount sufficient to adjust the carbon content of the melt to 0.6 to 3.0%, and the scrap steel is refined by blowing oxygen therein. This method can also be applied to the production of steel from reduced iron.
    Type: Grant
    Filed: April 24, 1975
    Date of Patent: May 17, 1977
    Assignee: National Research Institute for Metals
    Inventors: Ryuichi Nakagawa, Takuya Ueda, Shiro Yoshimatsu, Akira Sato, Tatsuro Mitsui, Tsuyoshi Ozaki, Akira Fukuzawa