US Patent Issued to NGK INSULATORS on Oct. 20 for "Honeycomb filter" (Japanese Inventor)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,766,452, issued on Oct. 20, was assigned to NGK INSULATORS Ltd. (Nagoya-City, Japan).

"Honeycomb filter" was invented by Sachiko Masuda (Nagoya, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A honeycomb filter includes a pillar-shaped honeycomb structure having a porous partition wall and a porous plugging portion, wherein the partition wall is composed of a material containing cordierite as a main component, a porosity of the partition wall is 60 to 70%, a ratio (S2/S1x100%) of the total S2 of an opening area of pores which exist within a unit surface area S1 and which have an equivalent circle diameter exceeding 3 micro metre with respect to th...