Patent Absurdity on Patents
Patents have a finite lifetime. The longest any patent in the US is good for is 20 years. After the patent is up, anyone can manufacture the patented item. A buddy of mine holds a lucrative patent and it just lost protection other outfits are knocking off his idea and not paying him royalties.
If the inventions are truly usable and truly energy conserving (in a sensible fashion) then they will get utilized sooner or later, even IF the oil companies have bought the rights to the devices a big if as I think it hooey.