ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,549, issued on Feb. 3, was assigned to COOLBROOK OY (Helsinki).

"Insert assembly for a rotary apparatus, related apparatus and method" was invented by Alexander Karpov (Helsinki), Denis Semenov (Helsinki) and Veli Matti Purola (Helsinki).

According to the abstract* released by the U.S. Patent & Trademark Office: "An insert assembly to be used in a rotary apparatus for thermally treating fluids is configured for installation into the rotary apparatus including a rotor with a plurality of rotor blades arranged into a rotor blade cascade, stationary vanes arranged into essentially annular vane cascades adjacently disposed with regard to the rotor blade cascade to form a stator-rotor-...