ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,395,479, issued on Aug. 19, was assigned to Amazon Technologies Inc. (Seattle).

"Cross-user account management on user devices" was invented by Matthew Butler (Seattle), Ching-Heng Chiu (Irvine, Calif.) and Charles Martin Babington (Seattle).

According to the abstract* released by the U.S. Patent & Trademark Office: "Techniques are disclosed for generating a ranked list of content for a user account of a service provider. A server device can determine that a first user account of a service provider is linked with a second user account of the service provider. The server device can then determine whether the first user account has been registered with the service provider a time perio...