ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,766,453, issued on Oct. 20, was assigned to Makita Corp. (Anjo, Japan).

"Cyclonic, dust-collecting unit and vacuum cleaner" was invented by Kosuke Komiya (Anjo, Japan), Junichi Iwakami (Anjo, Japan) and Kentaro Nakahara (Anjo, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A cyclonic, dust-collecting unit includes: one or more air swirling members, which swirl(s) air; a dust cap, into which air that has passed through the swirling member(s) flows; and a filter unit, through which air that flows out of the dust cap passes. The filter unit includes: a prefilter; a sound-absorbing member, through which air that has passed through the prefilter flows;...