US Patent Issued to HANA MATERIALS on Nov. 3 for "Focus ring and method for manufacturing the same" (South Korean Inventors)

ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,785,049, issued on Nov. 3, was assigned to HANA MATERIALS INC. (Cheonan-Si, South Korea).

"Focus ring and method for manufacturing the same" was invented by Je Guen Yu (Gyeonggi-do, South Korea), Aran An (Chungcheongbuk-do, South Korea), Wang Ki Choi (Chungcheongnam-do, South Korea) and Eun Young Lee (Chungcheongnam-do, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A focus ring and a method for manufacturing the same. The focus ring include a first ring made of a first material, a second ring covered by the first ring, wherein the second ring is made of a second material different from the first material, and a fastening member configured to...