The one-pump system. The leading edge doubles as a manifold, so every strut inflates from a single valve. Before it, riders pumped each strut separately on a beach in the wind. It is now standard on essentially every inflatable kite made.
The split strut. The canopy is secured to each rib strut at two points around its circumference instead of being sewn over the top of it, so the strut sits in the span of the canopy rather than under it. The canopy holds its shape under load, and the deformable member bleeds power in a gust instead of taking the rider with it.
Depower trim routed through the bar, so a rider changes the kite's angle of attack under load without letting go of anything. Still an active patent.
The control bar itself — the part every rider has both hands on, filed the same April day as the trim line system.
A control line routed inside the canopy that gathers the trailing edge, changing the wing's profile on demand — shape you can adjust rather than shape you are stuck with.
A hydrofoil watercraft whose propulsion system drives the hull at displacement speed, then disengages from the water once the craft is up and foiling.