ALEXANDRIA, Va., June 18 -- United States Patent no. 12,326,306, issued on June 10, was assigned to MAHLE INTERNATIONAL GMBH (Stuttgart, Germany).

"Crimping tool and heat exchanger made with crimping tool" was invented by Christian Merkle (Burgstetten, Germany) and Frank Nastoll (Ostfildern, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a crimping tool for creating at least one connection through which coolant can be conducted between a tube connector and a tube. The invention also relates to a heat exchanger that has the connections formed using the crimping tool. The invention also relates to a method for creating the connections between the tube connectors and the tubes u...