ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,639, issued on Feb. 17, was assigned to RESIDEO LLC (Golden Valley, Minn.).
"HVAC controller" was invented by Hyunki Kim (Golden Valley, Minn.) and Robert D. Juntunen (Golden Valley, Minn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A controller for an environmental control system, e.g., an HVAC system, that includes a power circuit for providing power to some components of the controller across a variety of HVAC systems. The HVAC controller of this disclosure may include components with power stealing circuitry to run components. However, because the diversity of HVAC system loads and configurations, some power stealing circuitry may not functio...