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Ownership of specific light spectrums would be fucked up
I think Anish Kapoor owns Vantablack if that counts. Technically he probably just owns the right to the paint
He doesn't own it. He has an exclusive license to use it in art. Surrey NanoSystems Limited owns the patent on VantaBlack. Stuart Semple was so angry that Kapoor received that license that he had a blacker black material created and licensed it to anyone but Kapoor. When Kapoor obtained a sample anyway, Semple had a still blacker material created, to spite him.
https://www.theguardian.com/artanddesign/shortcuts/2019/aug/05/black-30-anish-kapoor-and-the-art-worlds-pettiest-funniest-dispute
As much as I dislike Kapoor, technically Vantablack isn't a pigment or regular paint by any means. From my understanding it is actually carbon nano tubes with who knows what else mixed in it and I believe it's actually very dangerous to be around without proper PPE. So in that sense, it makes sense to me that he "owns" it.
Still don't like the guy though.
If it's patented, you can just read the patent to know what else is in it.
I could, but I don't personally care that much about Vantablack.
There is a group (person) that makes an actual super deep black paint called Black 4.0 and if memory serves correctly they actually started with a jab at Kapoor by originally making the Pinkest Pink paint and banned Kapoor from buying it. Looks like they have a lot of different paints these days and are definitely worth checking out.
They do it with radio spectrums.
They literally auction that shit off.