ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,477,045, issued on Nov. 18, was assigned to HiveMQ GmbH (Landshut, Germany).

"Data broker and client" was invented by Simon Johnson (Bournemouth, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method comprises transmitting by a client device in a publish/subscribe messaging system, in accordance with a publish/subscribe messaging protocol, a subscribe request to a data broker, and transmitting, by the client device to the data broker, a sleep indication, the sleep indication indicating that a messaging client of the client device is entering a sleep state until a sleep state end time and requesting that, while the messaging client is in ...