Yiyu LI

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Wen Zhou City, CN

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Patents Grantslast 30 patents

Information Patent Grant
Spectacle lens and frame glasses
- Patent number 12,111,516
- Issue date Oct 8, 2024
- SHANGHAI ISPARX MEDICAL CO., LTD
- Risheng Xia
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
SPECTACLE LENS AND FRAME GLASSES
- Publication number 20240264465
- Publication date Aug 8, 2024
- Risheng XIA
- G02 - OPTICS