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Dallas-Fort Worth ranked No. 11 for patents out of 250 metros. Patents granted include: Bell Helicopter Textron's anti-ice system for thermally fragile materials, Amazon Technologies' trust management in an electronic environment, Bank of America's synthesized voice authentication engine,K2M's expandable spinal implants, Lyft's apparatus for managing conference calls, Raytheon's LADAR data upsampling, UT, Texas AM System's 3D printing of regenerative bone healing scaffolds for rapid fracture healing, The Parking Genius' parking sensors capable of determining direction and speed of vehicle, and VPay's virtual payment card fraud detection.