Energy & environment · 25/08/2004Updated: 10/17/2026 · 1 min read
U.S. Drilling Group, Inc. Secures Exclusive Patent License for Geothermal Heat Pump Systems
Summary
U.S. Drilling Group, Inc. has been granted an exclusive patent license to practice a thermally conductive cementitious grout for geothermal heat pump systems, owned by the U.S. Department of Energy.
Original source language: Federal Register — Energy DepartmentOpen original release →