Slip is the failure mode that ruins an otherwise-good grasp. Dexterity's grant US11772262B2 ("Detecting slippage from robotic grasp," issued October 3, 2023; inventors Harry Zhe Su, Zhouwen Sun, Samir Menon) fences the detection of that moment — sensing, from touch and force signals, that a held object has started to move within the grip before it falls. The claim is about catching the slip, which is the prerequisite to correcting it.
The mechanism reads tactile and force sensors (B25J 13/082–084) to detect the micro-motion or shear-change that signals incipient slip, feeding control (B25J 9/1633, force/torque-based control). For a warehouse manipulator handling varied, unknown items, this is essential: you can't pre-compute the right grip force for every object, so you grip, sense slip, and tighten reactively. The claim fences that reactive loop.
For the manipulation beat, slip detection is one of those capabilities that's obvious in concept and hard in execution — which makes it good patent territory. The inventive content is in how the slip signal is extracted reliably from noisy contact data, and a claim tied to a specific detection method fences the practical version that works on a real picking line, not the textbook ideal.
From a portfolio angle, Dexterity built a dense, focused grasping portfolio in this period — US11731287B2 (tray gripper), US11801608B2 (toolset/gripper), US11806880B2 (soft-package handling), US11813758B2 (unknown-object pick-and-place). The slip-detection grant is the sensing-and-control complement to those mechanical and pipeline patents: together they fence an end-to-end picking capability, the moat a warehouse-manipulation startup needs to be defensible.
Caveats. Slip detection has tactile-robotics prior art, so the grant turns on the specific detection method in claim 1, not on the idea of sensing slip. The breadth depends on whether the claim recites a particular signal feature or a general approach. Read the independent claim for how slip is actually detected.
For the file: a closed-loop slip-detection grant inside a coherent warehouse-grasping portfolio. Pull US11772262B2 and the sibling Dexterity grasping patents on PatentBear; read claim 1 for the slip-detection signal — the reliability of that detection is the asset.