ALEXANDRIA, Va., July 28 -- United States Patent no. 12,691,659, issued on July 28, was assigned to IBIDEN Co. Ltd. (Ogaki, Japan).

"Mat material, exhaust gas purification device, and method for producing mat material" was invented by Yuta Kogo (Takahama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A mat material including: a base mat containing inorganic fibers and having a first main surface and a second main surface; and a sheet material disposed on at least one of the first main surface or the second main surface, wherein the sheet material is a stacked sheet material in which longitudinally oriented fibers and transversely oriented fibers are stacked, the sheet material has openings surrounded ...