ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,529,506, issued on Jan. 20, was assigned to Haier US Appliance Solutions Inc. (Wilmington, Del.).

"Door-in-door common axis hinge assembly with door stops" was invented by Louis A. Wantland (Louisville, Ky.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A refrigerator appliance includes a door-in-door assembly having a single axis of rotation for the inner and outer doors. The inner and outer doors have separate rotation stops to limit the rotation of the doors from a closed position to an open position. The outer door stop is fixed to the inner door and contacts a first tab that rotates with the outer door. The inner door stop is fixed to the cabinet a...