Patents:

US9,515.754"Measuring Audience Reaction"
US7,636,390"Reduction of Input Frames of a Signal"
US7,577,195"Method For Determining The Likelihood Of A Match Between Source Data And Reference Data"
US7,386,047"Method For Determining The Likelihood Of A Match Between Source Data And Reference Data"
US8,869,182"Presenting Listener Information"
US8,639,178"Broadcast Source Identification Based on Matching Broadcast Signal Fingerprints"
US9,374,183"Broadcast Source Identification Based on Matching Via Bit Count"
US9,460,201"Unordered Matching of Audio Fingerprints"
US9,014,615"Broadcast Source Identification Based on Matching Broadcast Signal Fingerprints"
US9,203,538"Broadcast Source Identification Based on Matching Broadcast Signal Fingerprints"
US9,461,759"Broadcast of Changed Broadcast Media Items"
US9,047,286"Program and Syndicated Content Detection"
US9,117,198"Listener Survey Tool with Time Stamping"

Patent Applications (Pending):

US20100043021"Determining Audience Response to Broadcast Content"
US20160294496"Identification of Broadcast Source Associated with Unknown Fingerprint"
US20150242865"Listener Survey Tool with Time Stamping"
US20150254339"Program and Syndicated Content Detection"