ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,551,835, issued on Feb. 17, was assigned to NIPPON MUKI Co. LTD. (Tokyo).
"Filter pack and air filter provided with same" was invented by Kazuya Seki (Tochigi, Japan), Shiro Hayashi (Ibaraki, Japan) and Hitoshi Niinuma (Ibaraki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are a filter pack capable of suitably maintaining a space between pleats while suppressing an increase in pressure loss, and an air filter provided with the same.The filter pack includes a filter medium that collects fine particles in a gas and has multiple pairs of ventilation surfaces which are continuous and face each other through alternating folds due to pleating...