US Patent Issued to Airgrinder on June 24 for "Method and apparatus for grinding and drying a material or a mixture of materials" (Swedish Inventor)

ALEXANDRIA, Va., June 25 -- United States Patent no. 12,337,329, issued on June 24, was assigned to Airgrinder AB (Skelleftehamn, Sweden).

"Method and apparatus for grinding and drying a material or a mixture of materials" was invented by Erik Backlund (Skelleftea, Sweden).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a method for grinding and drying a material or material mixture (M), using a cyclone device (10) which communicates with an outlet line (52) for gas (G) and material (M) processed in the cyclone device (10), wherein at least a portion of the gas (G) and material (M) in the outlet line (52) are returned into a lower opening (14) of the cyclone device (10) for further cyc...