ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,499,392, issued on Dec. 16, was assigned to CLEAN POWER RESEARCH LLC (Napa, Calif.).

"System and method for empirical electrical-space-heating-based building overall thermal performance estimation with the aid of a digital computer" was invented by Thomas E. Hoff (Napa, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The overall thermal performance of a building UATotal can be empirically estimated through a short-duration controlled test. Preferably, the controlled test is performed at night during the winter. A heating source is turned off after the indoor temperature has stabilized. After an extended period, such as 12 hours, the heating source...