Shenzhen Safdao Technology Corporation

Calculating rank

USPTO Granted Patents = 1

% Expired Patents = 100.0

Forward Citations = 2

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6 inventors (with patents filed for the assignee):

Yong Zhao (1 out of 43 patents)

Yong Dai (1 out of 10 patents)

Zejun Wu (1 out of 1 patent)

4. Ruzhong Cheng (1 out of 1 patent)

5. Yunli Qing (1 out of 1 patent)

6. Wei Chen (1 out of 107 patents)

1 patent: Sort by Forward Citations

1. 8891824 - Method and device for detecting fatigue driving and the automobile using the same (2014-11-18),

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USPTO Data Jan 1 1976 - Oct 27 2026

1 Patents

#622 in Guangdong

#18,836 in China

Guangdong, China

Shenzhen Safdao Technology Corporation

Forward Citations = 2

6 inventors:

Yong Zhao (1 out of 43 patents)

Yong Dai (1 out of 10 patents)

Zejun Wu (1 out of 1 patent)

4. Ruzhong Cheng (1 out of 1 patent)

5. Yunli Qing (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Shenzhen Safdao Technology Corporation. Retrieved from https://idiyas.com/company/shenzhen-safdao-technology

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]