Patents by Inventor Yoko Ban-Ya

Yoko Ban-Ya 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).

  • Flux for refining steel of low nitrogen, low oxygen and low sulfur
    Publication number: 20110167960
    Abstract: Disclosed is a steelmaking flux which makes it possible to produce steel of extremely low contents of oxygen, nitrogen and sulfur. The flux consists of, by weight, CaO: 30-57%, Al2O3: 35-64% and MgO: 5-17%, and having a composition in the area defined by the points A to E of Table 1 below in the MgO—CaO—Al2O3 diagram of FIG. 1, in which the activity of alumina is 10?2 or less. TABLE 1 Concentration (Molar basis, mole) Point NCaO NAl2O3 NMgO A 0.41 0.48 0.11 B 0.37 0.35 0.11 C 0.62 0.22 0.16 D 0.87 0.25 0.08 E 0.46 0.45 0.
    Type: Application
    Filed: December 21, 2007
    Publication date: July 14, 2011
    Applicant: Yohizawa Lime Industry Co., Ltd.
    Inventors: Shiro Ban-Ya, Yoko Ban-Ya, Mitsutaka Hind, Hiroyasu Ito, Syuhei Takeda