Patents by Inventor Yoshitaka Moriyama

Yoshitaka Moriyama 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).

  • Method and apparatus for treating accompanied water from a well
    Patent number: 10392283
    Abstract: A method and apparatus for removing soluble silica efficiently from accompanied water, produced from wells containing calcium ion, soluble silica, and sulfate ion, and not clogging a reverse osmosis membrane in the reverse osmosis membrane treatment process after that, includes adding a magnesium salt to mix with the accompanied water under alkaline conditions to produce insoluble silica and calcium sulfate. A microfiltration (MF) membrane treatment process includes treating a first reaction solution obtained in said magnesium salt adding process, with a microfiltration membrane to separate insolubilized silica and calcium sulfate by filtration. An acid adding process includes adding an acid to and mixing with filtrate obtained in the MF membrane treatment process to render a pH value of the filtrate on the range from 5 to 9 and a negative Langeliar saturation index.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: August 27, 2019
    Assignee: JFE ENGINEERING CORPORATION
    Inventors: Shigeki Fujiwara, Eri Watanabe, Yohei Tomida, Koji Fuchigami, Takeshi Tsuji, Yasuhiro Minamizato, Yasuto Ando, Yoshitaka Moriyama
  • Method and Apparatus for Treating Accompanied Water from A Well
    Publication number: 20150034556
    Abstract: A method and apparatus for removing soluble silica efficiently from accompanied water, produced from wells containing calcium ion, soluble silica, and sulfate ion, and not clogging a reverse osmosis membrane in the reverse osmosis membrane treatment process after that, includes adding a magnesium salt to mix with the accompanied water under alkaline conditions to produce insoluble silica and calcium sulfate. A microfiltration (MF) membrane treatment process includes treating a first reaction solution obtained in said magnesium salt adding process, with a microfiltration membrane to separate insolubilized silica and calcium sulfate by filtration. An acid adding process includes adding an acid to and mixing with filtrate obtained in the MF membrane treatment process to render a pH value of the filtrate on the range from 5 to 9 and a negative Langeliar saturation index.
    Type: Application
    Filed: October 14, 2014
    Publication date: February 5, 2015
    Applicant: JFE ENGINEERING CORPORATION
    Inventors: Shigeki Fujiwara, Eri Watanabe, Yohei Tomida, Koji Fuchigami, Takeshi Tsuji, Yasuhiro Minamizato, Yasuto Ando, Yoshitaka Moriyama