Ngk Insulators, Inc.

Ngk Filtech, Ltd.

Koji Hieda

Shinichi Kosaka

Muneyuki Iwabuchi

Takeyuki Fujiwara

Kohei Watanabe

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 &#x3bc;m or more is 0.02 cm/g or more.

Base material, for membrane filter and method for producing same

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 &#x3bc;m or less relative to the total number of cells is 9% or less.

Growing community of inventors

Toki, Japan

Koji Hieda