ALEXANDRIA, Va., April 2 -- United States Patent no. 12,264,884, issued on April 1, was assigned to ZEHNDER GROUP INTERNATIONAL AG (Granichen, Switzerland).

"Method for providing a heat exchanger block with a housing as well as heat exchanger block having such a housing" was invented by Christian Hirsch (Eibenstock, Germany) and Frank Sabaczuk (Zwickau, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "Method for providing a heat exchanger block (B) with a housing (H), said heat exchanger block (B) comprising at least a first outer surface region (B1) and a second outer surface region (B2) opposite said first outer surface region (B1), said housing (H) comprising at least a first housing portion (W1) co...