ALEXANDRIA, Va., March 5 -- United States Patent no. 12,241,597, issued on March 4, was assigned to SIGNIFY HOLDING B.V. (Eindhoven, Netherlands).
"LED filament lamp" was invented by Vincent Arnoud Wouters (Helmond, Netherlands) and Bertrand Johan Edward Hontele (Breda, Netherlands).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention provides a LED filament lamp (10) comprising: an envelope (11) enclosing a chamber (13) sealed with a stem (12), wherein the stem extends into said chamber; a LED filament structure (14) with at least two individually controllable segments (141-145); a controller (15) configured to receive a control signal and control each of the at least two individually controllable se...