4 Utility and 2 Design Patents
#9,366 in Beijing
#33,982 in China
rank by utility patentsForward Citations = 12
Company Filing History:
China University of Geosciences (beijing)
China University of Petroleum
Willand (beijing) Technology Co., Ltd.
4. 1 out of 354
China University of Mining and Technology
5. 1 out of 371

where one patent can have more than one assignee
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