US Patent Issued to NGK INSULATORS on Sept. 16 for "Honeycomb filter" (Chinese, American Inventors)

ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,415,154, issued on Sept. 16, was assigned to NGK INSULATORS Ltd. (Nagoya, Japan).

"Honeycomb filter" was invented by Yudai Kurimoto (Shanghai) and Fumihiko Yoshioka (Novi, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A honeycomb filter comprising a pillar-shaped honeycomb structure body having a porous partition wall and a plugging portion, wherein a thickness of the partition wall is 0.217 mm or less, a porosity of the partition wall is 57 to 63%, an average pore diameter of the partition wall is 6 to 14 micro metre, a number per unit area of pores which exist at a surface of the partition wall and which have equivalent circle opening diameter...