ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,521,698, issued on Jan. 13, was assigned to NGK INSULATORS Ltd. (Nagoya, Japan).
"Pillar-shaped honeycomb structure" was invented by Yasuhiro Shiga (Nagoya, Japan), Shuji Muramatsu (Nagoya, Japan) and Koji Motoki (Nagoya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pillar-shaped honeycomb structure including an outer peripheral side wall, and a plurality of partition walls disposed on an inner peripheral side of the outer peripheral side wall, the plurality of partition walls partitioning a plurality of cells forming flow paths from a first end surface to a second end surface, wherein an average pore diameter of the partition walls measured b...