US Patent Issued to GlobalWafers on Dec. 2 for "Axial positioning of magnetic poles while producing a silicon ingot" (South Korean, American Inventors)

ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,486,593, issued on Dec. 2, was assigned to GlobalWafers Co. Ltd. (Hsinchu, Taiwan).

"Axial positioning of magnetic poles while producing a silicon ingot" was invented by JaeWoo Ryu (Chesterfield, Mo.), Carissima Marie Hudson (Saint Charles, Mo.), JunHwan Ji (Cheonan-si, South Korea) and WooJin Yoon (Cheonan-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods for producing a silicon ingot in which a horizontal magnetic field is generated are disclosed. The magnet position is controlled in at least two stages of ingot growth. The magnetic poles may be at a first position during the first stage of ingot growth and lowered to a second posi...