ALEXANDRIA, Va., June 4 -- United States Patent no. 12,322,231, issued on June 3, was assigned to ASSA ABLOY Americas Residential Inc. (New Haven, Conn.).

"Manual electronic deadbolt" was invented by Alan Uyeda (Irvine, Calif.) and Gerald Chong (Mission Viejo, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electronically-controlled manually-actuated deadbolt lock is provided. The electronically-controlled manually-actuated deadbolt lock includes an internal spring-actuated coupling mechanism that, when a user is authenticated, the coupling mechanism is placed in an engaged position that allows a deadbolt latch to be moved into a locked or unlocked position responsive to a manual rotation of an exte...