ALEXANDRIA, Va., July 14 -- United States Patent no. 12,678,731, issued on July 14, was assigned to INGERSOLL-RAND INDUSTRIAL U.S. INC. (Davidson, N.C.).

"Compressed air drying unit" was invented by Henry Y. Mark (Philadephia, Pa.), Scott A. Johnson (Honey Brook, Pa.) and Stefano Vezil (Trieste, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "An air drying unit for compressed air systems is provided. The air drying unit has a precooler/reheater, a main cooler and a moisture separator. Incoming air is cooled to cause moisture within the compressed air to condense, which is then separated to dry the compressed air. The precooler/reheater, main cooler and moisture separator are designed as an integral unit...