[Illustration: Infadel/istockphoto]
Dallas-Fort Worth ranked No. 10 for patents out of 250 metros. Patents granted include: Toyota's methods for determining user frustration with voice control, AmerisourceBergen's pharmaceutical management and tracking, AT&T's apparatus for enriching metadata via a network, Encryptics' digital rights management of documents, IBM's secure medication delivery, Med Hab's dual case for fall detection device, MWD-IP Holdings' nuclear waste storage and monitoring, ShockWatch's wireless environmental sensor, and Varidesk's leaning chair.