Ruizhi Chen

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Huzhou, CN

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Patents Grantslast 30 patents

Information Patent Grant
Method, system and terminal for wide-area acoustic indoor positioni...
- Patent number 11,808,848
- Issue date Nov 7, 2023
- Zhejiang Deqing Zhilu Navigation Technology Co., LTD
- Guangyi Guo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Acoustic positioning system and method for smartphone and wearable...
- Patent number 11,686,809
- Issue date Jun 27, 2023
- Zhejiang Deqing Zhilu Navigation Technology Co., LTD
- Ruizhi Chen
- G01 - MEASURING TESTING