ALEXANDRIA, Va., June 16 -- United States Patent no. 12,309,837, issued on May 20, was assigned to BLUTECH INC. (Taipei, Taiwan).

"System and method of collision-free roaming wireless network with packet and timing division controlling multiple access" was invented by Deral Chen (Taipei, Taiwan) and Tsai Li Lin (Taipei, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A collision-free roaming wireless network includes a main server, at least one base station, at least one end device; the main server and the at least one base station are in an external communication network; the main server obtains basic information of the at least one base station; each of the at least one end device transmits individua...