ALEXANDRIA, Va., June 16 -- United States Patent no. 12,303,060, issued on May 20, was assigned to LG Electronics Inc. (Seoul, South Korea).
"Coffee extraction apparatus" was invented by Wonkyu Lee (Seoul, South Korea), Jungwon Lee (Seoul, South Korea), Seoyoun Kim (Seoul, South Korea) and Jongkwan Choi (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A coffee extraction apparatus includes: a first grinder that includes a first burr configured to rotate, a first burr through-hole defined in the first burr in an axial direction of the first burr, a first burr inlet, a first burr outlet discharging coffee powder, a second burr inserted into the first burr through-hole through the first burr o...