ALEXANDRIA, Va., July 16 -- United States Patent no. 12,668,367, issued on June 30, was assigned to CAV Ice Protection Ltd. (Durham, Great Britain).

"Ice protection apparatus and system" was invented by Robert Brock Harden (Colorado Springs, Colo.) and Niall Jude Boxwell (Durham, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A freezing point depressant (FPD) fluid distribution apparatus and ice protection system for a propeller blade, the apparatus comprising an upper section and a lower section, wherein the upper section is configured to distribute FPD fluid to the low pressure side of a propeller blade, and the lower section is configured to distribute FPD fluid to the high pressure side of ...