Beijing, China

Yongjin Chen

This inventor holds 2 USPTO granted patents and 1 EPO patent. Top assignee: Changzheng Engineering Co., Ltd.. Active years: 2017-2018.


% Patents Active = 100.0

 

Average Co-Inventor Count = 7.5

ph-index = 1


Company Filing History:


Years Active: 2017-2018

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2 patents (USPTO):Explore Patents

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