You San Qian

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Shanghai, CN

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Patents Applicationslast 30 patents

Information Patent Application
SEALING FOAM RESPIRATOR, AND METHOD FOR MANUFACTURING SEALING FOAM
- Publication number 20230321467
- Publication date Oct 12, 2023
- 3M Innovative Properties Company
- Zhigang Yu
- B32 - LAYERED PRODUCTS
Information Patent Application
SEALING STRIP, RESPIRATOR, AND METHOD FOR MANUFACTURING SEALING STRIP
- Publication number 20230320440
- Publication date Oct 12, 2023
- 3M Innovative Properties Company
- Hui Juan Chen
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Application
Liquid-Absorbing Material And Preparation Method Thereof, Absorbent...
- Publication number 20220280916
- Publication date Sep 8, 2022
- 3M Innovative Properties Company
- Miaoru Ling
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL