Dallas-Fort Worth ranked No. 9 for patents out of 250 metros. 7-Eleven's action detection during image tracking, Alto-Shaam's multizone oven with variable volume steam-assisted cooking zones, Astrapi's spiral polynomial division multiplexing, Bank of America's ID of candidate training utterances from human conversations with an intelligent interactive assistant, Baylor Research Institute's anti-CD40 antibodies, Halliburton's position indicator through acoustics, IBM's big data sourcing simulator, OMNITRACS' vehicle video recording system with driver privacy, an unassigned solar swimming pool skimmer, Verizon's streaming content using ad hoc networks of user devices, and Warstic Sports's baseball bat with symmetrical rounded knob