ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,552,723, issued on Feb. 17, was assigned to PROTERIAL LTD. (Tokyo).

"Ceramic honeycomb structure and its production method" was invented by Shunji Okazaki (Fukuoka, Japan), Kenichiro Shimizu (Fukuoka, Japan) and Toshitaka Ishizawa (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A ceramic honeycomb structure comprising pluralities of honeycomb segments each having pluralities of longitudinally penetrating flow paths partitioned by porous cell walls and plugs formed in the end portions of the flow paths, and a bonding material layer boding the peripheral walls of the honeycomb segments, the bonding material layer comprising silicon carbide particles...