ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,510,261, issued on Dec. 30, was assigned to Vitality Ventures HK Co. Ltd. (Mill Valley, Calif.).
"Air purifier with noise mitigation 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 noise mitigation feature that detects when an ambient space is occupied and provides for decreased fan speed, resulting in decreased fan noise, during periods of time in which the ambient space is determined to be occup...