ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,966, issued on Feb. 3, was assigned to LTI Holdings Inc. (Pleasanton, Calif.).

"System and method for controlling refrigeration loop expansion valve flow and compressor speed under conditions of rapid heat load changes" was invented by Eric Zahl (Saint Helens, Ore.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A hybrid controller for a thermal control unit for controlling the temperature of a device under test (DUT) is described that uses information from an in independent heat-injecting control loop as a fast-responding proxy for relative changes in DUT test head load. This information provides additional feedback to the refrigeration sub-system's ...