ALEXANDRIA, Va., March 17 -- United States Patent no. 12,579,595, issued on March 17, was assigned to Scheidt & Bachmann GmbH (Monchengladbach, Germany).

"Backend system for a passenger transport system" was invented by Kai Oelert (Walldorf, Germany) and Marian Kassovic (Bratislava, Slovak Republic).

According to the abstract* released by the U.S. Patent & Trademark Office: "A backend system for a passenger transport system includes: data memory for storing at least one user data set containing at least one electronic medium identifier authorizing the execution of a transport trip and at least one first transport usage condition linked to the electronic medium identifier; a receiving module configured to receive a change data set containi...