ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,446,744, issued on Oct. 21, was assigned to Koki Holdings Co. Ltd. (Tokyo).
"Vacuum cleaner" was invented by Naoto Ichihashi (Ibaraki, Japan) and Hiroyuki Tagami (Ibaraki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a vacuum cleaner comprising: a main body housing 10 which houses a motor and a fan and which has an intake by which an airflow created by the fan enters inside; and a dust collection unit which is attachable to and detachable from the main body housing 10 so as to cover the intake. The main body housing 10 has an attachment-receiving part 30 with a common shape such that a cyclonic dust collection unit 50 which separates...