Patents by Inventor Toshihiro Tamai

Toshihiro Tamai 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).

  • Polymer membrane for water treatment and method for manufacture of same, and water treatment method
    Patent number: 9855531
    Abstract: A polymer membrane for water treatment, characterized in comprising a hollow fiber membrane having a self-supporting design composed of the substantially single principal structural material, with an outer diameter of 3.6 mm to 10 mm and a ratio of outer diameter to thickness, SDR, of 3.6 to 34.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: January 2, 2018
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Toshihiro Tamai, Naotaka Oyabu, Saki Tanimura, Takashi Osugi, Ryuichi Matsuo
  • POLYMER MEMBRANE FOR WATER TREATMENT AND METHOD FOR MANUFACTURE OF SAME, AND WATER TREATMENT METHOD
    Publication number: 20160030892
    Abstract: A polymer membrane for water treatment, characterized in comprising a hollow fiber membrane having a self-supporting design composed of the substantially single principal structural material, with an outer diameter of 3.6 mm to 10 mm and a ratio of outer diameter to thickness, SDR, of 3.6 to 34.
    Type: Application
    Filed: October 15, 2015
    Publication date: February 4, 2016
    Inventors: Toshihiro TAMAI, Naotaka OYABU, Saki TANIMURA, Takashi OSUGI, Ryuichi MATSUO
  • Polymer membrane for water treatment and method for manufacture of same
    Patent number: 9193815
    Abstract: A polymer membrane for water treatment composed of a vinyl chloride copolymer comprising a vinyl chloride monomer and a hydrophilic monomer.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: November 24, 2015
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Toshihiro Tamai, Yuki Goto, Takashi Osugi, Ryuichi Matsuo, Naotaka Oyabu
  • POLYMER MEMBRANE FOR WATER TREATMENT AND METHOD FOR MANUFACTURE OF SAME, AND WATER TREATMENT METHOD
    Publication number: 20120325746
    Abstract: A polymer membrane for water treatment, characterized in comprising a hollow fiber membrane having a self-supporting design composed of the substantially single principal structural material, with an outer diameter of 3.6 mm to 10 mm and a ratio of outer diameter to thickness, SDR, of 3.6 to 34.
    Type: Application
    Filed: March 2, 2011
    Publication date: December 27, 2012
    Inventors: Toshihiro Tamai, Naotaka Oyabu, Saki Tanimura, Takashi Osugi, Ryuichi Matsuo
  • POLYMER MEMBRANE FOR WATER TREATMENT AND METHOD FOR MANUFACTURE OF SAME
    Publication number: 20120318730
    Abstract: A polymer membrane for water treatment composed of a vinyl chloride copolymer comprising a vinyl chloride monomer and a hydrophilic monomer.
    Type: Application
    Filed: March 2, 2011
    Publication date: December 20, 2012
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Toshihiro Tamai, Yuki Goto, Takashi Osugi, Ryuichi Matsuo, Naotaka Oyabu
  • Polymer membrane for water treatment
    Patent number: 8181795
    Abstract: A polymer membrane for water treatment contained a chlorinated vinyl chloride resin with a chlorine content of 58 to 73.2%. According to the present invention, it is possible to provide polymer membranes for water treatment that, along with being able to achieve sufficient filtration capacity and water permeability, have extremely high strength.
    Type: Grant
    Filed: July 5, 2010
    Date of Patent: May 22, 2012
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Toshihiro Tamai, Saki Tanimura, Naotaka Oyabu, Ryuichi Matsuo, Takashi Osugi, Yuki Goto, Tadashi Okamoto
  • POLYMER MEMBRANE FOR WATER TREATMENT
    Publication number: 20120097605
    Abstract: A polymer membrane for water treatment contained a chlorinated vinyl chloride resin with a chlorine content of 58 to 73.2%. According to the present invention, it is possible to provide polymer membranes for water treatment that, along with being able to achieve sufficient filtration capacity and water permeability, have extremely high strength.
    Type: Application
    Filed: July 5, 2010
    Publication date: April 26, 2012
    Inventors: Toshihiro Tamai, Saki Tanimura, Naotaka Oyabu, Ryuichi Matsuo, Takashi Osugi, Yuki Goto, Tadashi Okamoto