21 Utility Patents
#2,189 in Beijing
#5,348 in China
#157,258 in the World
Forward Citations = 9
Company Filing History:


Grirem Advanced Materials Co., Ltd.
4. 1 out of 832,448 patents
Other
5. 1 out of 10
General Research Institute for Nonferrous Metals
where one patent can have more than one assignee
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