ZigBee is a low-cost, low-power, wireless mesh networking standard based on the IEEE 802.15.4-2003 for Wireless Personal Area Networks. Zigbee is one of key enableing technologies for M2M (Machine-to-Machine) applications: smart grids. connected home, building automation, mobile helath, security, and automatic control.To find the key IPR holders for zigbee for M2M patents, a keyword search of the USPTO patent data base has been performed. Total of 864 patents (727 published patent applications) are identified as of Feb. 28, 2011. Samsung Electronics is the leader followed by Philips, Abbott Diabetes Care, ITRI, LG Electronics, Motorola, and RIM.
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