Description  Claims  Drawing  Cited references 

US2016048231A   [0006] 
US2016085298A   [0007] 
US2013142363A   [0008] 
WO2013168170A1   [0053] 
US20130127783A1   [0055] 

Transferring Data from Smartwatch to Smartphone through Mechanical Wave Propagation   [0005] 
Mbps Experimental Acoustic Through-Tissue Communications: MEAT-COMMS   [0005] 
SkinHaptics: Ultrasound Focused in the Hand Creates Tactile Sensations   [0043]