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US 5961804

Tiny Capsules for Electronic Paper Displays

MIT's 1999 patent on a special ink made of tiny capsules that can change color when an electric field is applied, forming the basis for early e-readers.

Statusexpired

Granted1999

Expires2017

Claims49

Forward citations508

Prior art44

AssigneeMassachusetts Institute of Technology

InventorsJoseph Jacobson, Barrett Comiskey +1

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