ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,534,945, issued on Jan. 27, was assigned to Shandong Huajing Cold Chain Technology Co. LTD. (Qingzhou, China).
"Door hinge" was invented by Jianqing Qi (Qingzhou, China), Xintian Li (Qingzhou, China), Shiwen Fang (Qingzhou, China) and Jun Wang (Qingzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is door hinge. Hinge seat therein has first adjustment mechanism moving back and forth along installation direction, and hinge core is located on one side of first adjustment mechanism; and first adjustment mechanism is fixedly provided with second adjustment mechanism and third adjustment mechanism, and hinge core, second adjustment mechanis...