ALEXANDRIA, Va., June 17 -- United States Patent no. 12,311,443, issued on May 27, was assigned to SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION (Seoul, South Korea).
"Method for forming metal sintered body" was invented by Heung Nam Han (Seoul, South Korea), No Jun Kwak (Seoul, South Korea), Yeon Ju Oh (Seoul, South Korea) and Guen Sik Min (Incheon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a method of forming a sintered metal, the method including a first step of inserting tungsten (W) powder in a graphite mold, a second step of interposing tantalum (Ta) foil between the W powder and the graphite mold, and a third step of forming sintered W from the W powder through a sintering pro...