Walk the independent claim. Microsoft's grant US10901510B2, "Haptic feedback system having two independent actuators" (issued January 26, 2021; inventors Siyuan Ma and James David Holbery), is a granted patent. Its CPC tags — G06F 3/016 (haptic output), G06F 3/014 (glove/wearable input), and H01L 41/0825 (piezoelectric devices) — point toward rich, possibly wearable, haptics.
The element that does the work is independence. Two actuators driven together as one give you a bigger version of one sensation; two driven independently let you create spatially distinct or layered sensations — a tap on one part of the hand and a sustained pressure on another, simultaneously. The claim's contribution is the architecture and control that keep the two actuators independent.
What it reads on is rich haptic hardware — controllers, gloves, and wearable devices where conveying spatial or layered tactile information matters, the kind of immersive input Microsoft has pursued for mixed reality. The G06F 3/014 wearable-input class is the strongest hint at the intended product context.
Read against Apple's single-actuator grant from the same year, this is a study in opposite philosophies. Apple's bet is efficiency: one actuator, many modes. Microsoft's is expressiveness: two actuators, independently controlled, for sensations a single unit cannot produce. Neither is wrong; they target different products, and the claims reflect that.
Scope discipline: the claim protects the recited two-independent-actuator system, not haptics generally and not any single-actuator design. A device with one actuator, or with two driven only in lockstep, falls outside it. The defensible element is the independence of control.
Granted status makes US10901510B2 a real obstacle for anyone building multi-actuator, spatially-aware haptics, particularly in the wearable and mixed-reality input space. For a landscape analyst, the patent marks Microsoft's position in expressive haptics — a position defined precisely by the independence its title advertises.