The primary claims of the patent are really stating the use of split winglets in general. Dihedral as shown on a helicopter rotor blade does not really make much sense at all, but since all the aerodynamic modeling described in the patent was for improved L/D with dihedral fixed wing applications, I guess thats the way they tried to made the extra claim 11 for a helicopter application.
Accordingly, it can be advantageously utilized with fixed wing aircraft, helicopters, propeller blades, fans, wind power turbine blades, cooling fan blades, aerodynamic spoilers, and other devices utilizing airfoils.
https://patents.google.com/patent/US10625847B2/en
In reality, this is sort of taking the BERP concept to the extreme, where it used a well-integrated notch shape to create a smaller vortex that interfaced with the main one, this concept achieves a similar effect with 2 discrete tips.