ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,510,264, issued on Dec. 30, was assigned to ZEHNDER GROUP INTERNATIONAL AG (Granichen, Switzerland).
"Heat recovery unit" was invented by Eric Arends (Zwolle, Netherlands) and Martijn Haddeman (Epe, Netherlands).
According to the abstract* released by the U.S. Patent & Trademark Office: "A heat recovery unit with a unit housing (11) defining a unit compartment, a heat exchanger (20), a fresh air bypass flow passage and/or an exhaust air bypass flow passage, a fresh air centrifugal fan arrangement (41) and an exhaust air centrifugal fan arrangement (42), a fresh air filter (51) and an exhaust air filter (52)."
The patent was filed on July 19, 2021, under Application No. 18/016,116.
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