USWindLabs claims wind spar buoy IP that players in EU, like Google-Shell, and now Mastek of Korea are treating as obvious and/or prior art. The practical question is whether anyone will fund a risky IP battle against corporate giants, when prior art documentation might easily pop up. Doug is free to comment on the New Forum, and be copied here.

In offshore AWE, a spar buoy may not be so useful since a kite may pull from a cheaper conventional buoy at the surface, rather than require a tall floating tower.

https://nawindpower.com/new-u-s-patent-awarded-for-floating-offshore-wind-turbines