ALEXANDRIA, Va., June 16 -- United States Patent no. 12,656,013, issued on June 16, was assigned to Vitality Ventures HK Co. Ltd. (Mill Valley, Calif.).
"Air purifier with selective cleaning feature" was invented by Grant Prigge (Belvedere-Tiburon, Calif.) and Yordan Konstantinov Kralev (Sofia, Bulgaria).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates generally to the field of air purifiers, and more particularly to an air purifier having a control system providing a selective cleaning feature that detects when an ambient space is unoccupied and provides for increased fan speed and associated increased air filtration during periods of time in which the ambient space is determined ...