9 Utility and 1 Design Patents
#119 in Qingdao
#14,525 in China
#457,599 in the World
rank by utility patentsForward Citations = 2
Company Filing History:
Qingdao University of Technology


4. 2 out of 61

5. 2 out of 2
Qingdao Sisa Abrasives Co., Ltd.
where one patent can have more than one assignee
Get your Inventor Badge Today