Patents by Inventor Yukihiro Tao

Yukihiro Tao 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).

  • Publication number: 20020144940
    Abstract: An apparatus for treatment of fluorine waste water has an introduction tank, a main treatment tank, a calcium hydroxide tank, a polychlorinated aluminum tank, a macromolecular flocculant tank, a settling tank, and a concentration tank. Fluorine waste water is introduced through the introduction tank into a lower part of the main treatment tank. Also, return sludge from the concentration tank and silicon sludge from a silicon waste water treatment system are introduced into an upper part of the main treatment tank. Thus, silicon recovered from silicon waste water is recycled for treatment of fluorine waste water. Also, unreacted chemicals, which have been loaded in the calcium hydroxide tank, polychlorinated aluminum tank, macromolecular flocculant tank, are recycled. The main treatment tank has no stirrer, but can neutralize the waster water.
    Type: Application
    Filed: June 4, 2002
    Publication date: October 10, 2002
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Kazuyuki Yamasaki, Kazumi Chujo, Seiji Okamoto, Yukihiro Tao
  • Patent number: 6413417
    Abstract: An apparatus for treatment of fluorine waste water has an introduction tank, a main treatment tank, a calcium hydroxide tank, a polychlorinated aluminum tank, a macromolecular flocculant tank, a settling tank, and a concentration tank. Fluorine waste water is introduced from the introduction tank into a lower part of the main treatment tank through a lower inlet pipe. Also, return sludge from the concentration tank and silicon sludge from a silicon waste water treatment system are introduced into an upper part of the main treatment tank. Thus, silicon recovered from silicon waste water is recycled for treatment of fluorine waste water. Also, unreacted chemicals, which have been loaded in the calcium hydroxide tank, polychlorinated aluminum tank, macromolecular flocculant tank, are recycled. The main treatment tank has no stirrer and thus conserves electrical energy, but can still neutralize the waste water.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: July 2, 2002
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kazuyuki Yamasaki, Kazumi Chujo, Seiji Okamoto, Yukihiro Tao