38 Utility and 4 Design Patents
#48 in Hangzhou
#2,392 in China
#61,417 in the World
rank by utility patentsForward Citations = 119
Company Filing History:

Hangzhou Yixiang Technology Research and Development Co., Ltd.
Nanjing Topto Materials Co., Ltd.
4. 2 out of 42
Banma Zhixing Network (hongkong) Co., Limited
5. 2 out of 27
Hangzhou Normal University
where one patent can have more than one assignee
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