ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,558,202, issued on Feb. 24, was assigned to HASS Co. LTD (Gangneung-si, South Korea).
"Dental bulk block and method of manufacturing same" was invented by Hyung Bong Lim (Ansan-si, South Korea) and Yong Su Kim (Gangneung-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a dental bulk block made from a glass-ceramic material having a crystalline phase embedded in an amorphous glass matrix. The crystalline phase includes eucryptite and at least one lithium silicate-based crystalline phase selected from the group consisting of lithium metasilicate and lithium disilicate. The dental bulk block is a functionally graded material havin...