ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,233,812, issued on Feb. 25, was assigned to Daicel Corp. (Osaka, Japan).

"Gas generator" was invented by Katsuhiro Imoto (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A gas generator comprising, a first ignition device, a first inner tube member including therein the first ignition device and a surrounding wall portion provided with one or a plurality of communication holes, the surrounding wall portion including, in a circumferential direction thereof, a combustion product discharge region and a combustion product non-discharge region, and a housing including a peripheral wall portion and defining therein a first combustion chamber, the periphe...