Patents by Inventor Koji HIEDA

Koji HIEDA 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).

  • Base material, for membrane filter and method for producing same
    Patent number: 11571666
    Abstract: A base material for a membrane filter contains 90% by mass or more of aluminum oxide and 0.1% by mass or more and 10% by mass or less of titanium oxide. In a pore distribution curve measured by a mercury porosimeter, the base material has a first peak and a second peak which is higher than the first peak and is located at a pore size larger than that of the first peak, and the volume of pores with a pore size of 7 ?m or more is 0.02 cm3/g or more.
    Type: Grant
    Filed: August 11, 2020
    Date of Patent: February 7, 2023
    Assignee: NGK Insulators, Ltd.
    Inventor: Koji Hieda
  • Ceramic membrane filter and method for producing the same
    Patent number: 10974203
    Abstract: A ceramic membrane filter includes a porous substrate including cells through which a fluid flows, an intermediate membrane formed on the porous substrate, and a separation membrane formed on the intermediate membrane. In this ceramic membrane filter, the percentage of the number of cells having cracks with a size of 4 ?m or less relative to the total number of cells is 9% or less.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: April 13, 2021
    Assignee: NGK Insulators, Ltd.
    Inventors: Koji Hieda, Muneyuki Iwabuchi
  • BASE MATERIAL FOR MEMBRANE FILTER AND METHOD FOR PRODUCING SAME
    Publication number: 20200368695
    Abstract: A base material for a membrane filter contains 90% by mass or more of aluminum oxide and 0.1% by mass or more and 10% by mass or less of titanium oxide. In a pore distribution curve measured by a mercury porosimeter, the base material has a first peak and a second peak which is higher than the first peak and is located at a pore size larger than that of the first peak, and the volume of pores with a pore size of 7 ?m or more is 0.02 cm3/g or more.
    Type: Application
    Filed: August 11, 2020
    Publication date: November 26, 2020
    Applicant: NGK INSULATORS, LTD.
    Inventor: Koji HIEDA
  • CERAMIC MEMBRANE FILTER AND METHOD FOR PRODUCING THE SAME
    Publication number: 20190022597
    Abstract: A ceramic membrane filter includes a porous substrate including cells through which a fluid flows, an intermediate membrane formed on the porous substrate, and a separation membrane formed on the intermediate membrane. In this ceramic membrane filter, the percentage of the number of cells having cracks with a size of 4 ?m or less relative to the total number of cells is 9% or less.
    Type: Application
    Filed: September 26, 2018
    Publication date: January 24, 2019
    Applicant: NGK INSULATORS, LTD.
    Inventors: Koji HIEDA, Muneyuki Iwabuchi