Dallas-Fort Worth ranked No. 11 for patents out of 250 metros. Patents granted include: Grizzly Home's tornado-proof housing, American Airlines' demand forecasting, Avodah Labs'automated sign language translation and communication, Capital One's techniques to leverage machine learning for SEO, Olaeris' landing guidance for remotely operated aerial vehicles, Refocus Group's scleral prosthesis for treating presbyopia and other eye disorders, Swirlds' apparatus for efficiently implementing a fast-copyable database, and Toyota's system and method for Braille assistance.