ALEXANDRIA, Va., June 9 -- United States Patent no. 12,649,689, issued on June 9, was assigned to COOLBROOK OY (Helsinki).

"Method and apparatus for heating fluids in processes related to refining and petrochemical industries using rotary generated thermal energy" was invented by Veli Matti Purola (Helsinki) and Tuomas Ouni (Helsinki).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method is provided for inputting thermal energy into fluidic medium in a process or processes related to oil refining and/or petrochemical industries by at least one rotary apparatus comprising a casing with at least one inlet and at least one exit, a rotor comprising at least one row of rotor blades arranged over a circumference ...