Patents by Inventor Toru Hata

Toru Hata 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).

  • Aqueous zinc nitrite solution and method for preparing the same
    Publication number: 20020001559
    Abstract: An aqueous zinc nitrite solution contains as impurities 10 ppm or less of sodium (Na) and 100 ppm or less of sulfate ions (SO4) when the aqueous solution has a concentration of zinc nitrite [Zn(NO2)2] of 10% by weight in terms of NO2. Also, disclosed is a method for preparing an aqueous zinc nitrite solution, including a first step of reacting zinc sulfate with calcium nitrite to form an aqueous zinc nitrite solution and a second step of purifying the aqueous zinc nitrite solution.
    Type: Application
    Filed: May 15, 2001
    Publication date: January 3, 2002
    Inventors: Yutaka Kinose, Takahiro Nagayama, Toru Hata