Most of us here are discussing the science of this thing. But let's just say that the science somehow miraculously works. Would any of you actually want to buy that big square thing and put it in your rooms? I can't imagine I would.
I don't hate wires so much that I want to be bathed in high-power ultrasound.
And you know what, I have an invention that means your laptop will continue to work in almost any position - you won't have to keep a clear view between charger and laptop. You can turn around, lie down, have a colleague stand over your shoulder. There are some limits, sure, but it gives you a fair bit of freedom to move, and it allows a ton of power to be more effectively transmitted along its full length (with negligible loss), and you can use it anywhere you can find consumer power. It's called a 'wire'.
Electronics have gotten miniaturized, but that doesn't mean that a mechanical device that generates sound vibrations can be miniaturized. For example, an iPhone contains the computing power that used to take up a large room, but we don't have loudspeakers that are 0.01 inches in diameter and deliver the same sound output as conventional ones.
Antennas aren't mechanical devices; they don't need to transfer mechanical energy to air molecules. Also, their size is constrained by the power they need to emit as well as the wavelength of the signal, so we aren't going to see a cell phone antenna that's on the same scale as a transistor in an integrated circuit (tens of nanometers). An antenna that can only put out a microwatt of power won't be able to hit a cell tower that's a couple of miles away.
