i went to a 'candle light concert' where they had a little asterisk at the bottom pointing out the candles were "flameless", they probably had several hundred L

i went to a 'candle light concert' where they had a little asterisk at the bottom pointing out the candles were "flameless", they probably had several hundred LED candles lined up on each edge of the room as the main light source. it was pretty cool and im guessing they used those patents?