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关于钕铁硼磁体专利权（目前为日本住友特殊金属公司和美国的 ＭＱＩ－ＭａｇｎｅｔｑｕａｎｃｈＩｈｔｅｒｎａｔｉｏｎａｌ公司所有）的保护期限何时终止问题备受人们的关注。目前，美国 ＭＱＩ公司己经明确了其所有钕铁硼磁体各种专利的概况。概况表明，钕铁硼磁体的成份专
The issue of when the protection period of NdFeB magnets (currently owned by Sumitomo Specialty Metals of Japan and MQI-Magnetquanch Ihternational of the United States) is terminated has attracted much attention. At present, U.S. MQI Corporation has already defined the profile of all patents for all its NdFeB magnets. Overview shows that the composition of NdFeB magnets