ALEXANDRIA, Va., April 21 -- United States Patent no. 12,609,770, issued on April 21, was assigned to FRONTIER COMMUNICATIONS HOLDINGS LLC (Dallas).

"Multi-band coexistence element" was invented by John Valdez (Copper Canyon, Texas) and Erwin Wardojo (McKinney, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A coexistence element within a passive optical network (PON) includes a housing having a plurality of input communication ports. Each input communication port is configured to receive, via a separate optical fiber, optical communications each having a wavelength within a particular wavelength band corresponding to a particular optical service. At least one of the input communication ports is configu...