ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,774,790, issued on Oct. 27, was assigned to SIGNIFY HOLDING B.V. (Eindhoven, Netherlands).
"LED filament" was invented by Ties Van Bommel (Horst, Netherlands) and Rifat Ata Mustafa Hikmet (Eindhoven, Netherlands).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to an LED filament (10) comprising: an at least partially light-transmissive elongated carrier (14); first LEDs (20) configured to emit first LED light (22) and distributed along the carrier on a first surface thereof; a first elongated translucent layer (26) comprising a first luminescent material arranged to at least partly convert said first LED light into first conv...