US Patent Issued to DAICEL on Oct. 14 for "Cylindrical filter for pyrotechnic device, manufacturing method for cylindrical filter, and pyrotechnic device using cylindrical filter" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,441,270, issued on Oct. 14, was assigned to DAICEL Corp. (Osaka, Japan).

"Cylindrical filter for pyrotechnic device, manufacturing method for cylindrical filter, and pyrotechnic device using cylindrical filter" was invented by Masato Hirooka (Tokyo) and Yoshiaki Nishikawa (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A cylindrical filter for a pyrotechnic device, including a gas generating agent or pressurized gas as a gas generation source, includes a first annular end surface, a second annular end surface positioned opposite to the first annular end surface, and a cylindrical wall surface between the first annular end surface and the second an...