ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,424,717, issued on Sept. 23, was assigned to Nokia Solutions and Networks Oy (Espoo, Finland).
"Frequency adjustable filter" was invented by Efstratios Doumanis (Helsinki), Jaakko Petteri Vuorio (Espoo, Finland), Kari Johannes Hautio (Espoo, Finland) and Oskari Amper (Klaukkala, Finland).
According to the abstract* released by the U.S. Patent & Trademark Office: "Arrangements for a frequency adjustable filter, which includes at least a housing, which includes one or more cavities closed by a lid above the housing are disclosed. In an arrangement, there is, per a cavity forming a resonator, a first resonator element extending from the lid, a second resonator element extending from th...