ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,451,856, issued on Oct. 21, was assigned to TDK Corp. (Tokyo).
"Branching filter" was invented by Toshiyuki Takami (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A branching filter includes a first diplexer, a second diplexer, and a third diplexer. An input end of the first diplexer is connected to an input port. An input end of the second diplexer and an input end of the third diplexer are connected to two output ends of the first diplexer, respectively. Two output ends of the second diplexer are connected to first and second output ports, respectively. Two output ends of the third diplexer are connected to third and fourth output ports, respect...