ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,623, issued on Sept. 23, was assigned to BCnC Co. Ltd. (Icheon-si, South Korea).
"Cylindrical silicon ingot manufacturing method" was invented by Kwang Hee Seol (Icheon-si, South Korea) and Seo Hwan Lee (Icheon-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a cylindrical ingot manufacturing method including: an operation of supplying a silicon raw material to an inside of a crucible and heating the crucible to melt the silicon raw material; an operation of supplying a seed crystal having one end fastened to a seed shaft to the inside of the crucible; and an operation of moving the seed crystal from a lower portion of the...