Piezochromic device
AssigneeSun Chemical Corporation
InventorsAaron Hollman, Russell Schwartz, David Kozak
Life of this patent
Estimating the term…
Abstract
The current invention relates to a piezochromic device wherein said device exhibits a reversible change in appearance initialed by an external applied force and then reverts back to its original appearance over a set relaxation time when the external force is removed. In one embodiment, a device comprising a transparent or semi-transparent cover layer and a magnetic layer, wherein between the cover layer and the magnetic layer is a liquid medium containing magnetically alignable pigments.
Claims14
A device comprising a transparent or semi-transparent cover layer and a magnetic layer, wherein between the cover layer and the magnetic layer is a liquid medium containing magnetically alignable pigments, wherein the magnetic layer is a permanent magnet.
Dependencies are inferred from the claim text.