ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,237,825, issued on Feb. 25, was assigned to RF360 Singapore Pte. Ltd. (Singapore).
"Filter device comprising two connected filter circuits" was invented by Georgiy Sevskiy (Munich), Stefan Freisleben (Neubiberg, Germany), Patric Heide (Vaterstetten, Germany), Oleksandr Ruban (Munich) and Igor Ielegechev (Munich).
According to the abstract* released by the U.S. Patent & Trademark Office: "A filter device having a reduced sensitivity to production tolerances comprises a multilayer panel with integrated wiring, a piezoelectric substrate mounted to the panel. A first filter circuit (FC1) and a signal path (SP) comprising a second filter circuit are realized on the substrate and connected...