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Patents Grantslast 30 patents

Information Patent Grant
Aqueous polyurethane functional mask substrate and application thereof
- Patent number 11,964,032
- Issue date Apr 23, 2024
- WANHUA CHEMICAL GROUP CO., LTD
- Xiaoxiao Ji
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
AQUEOUS POLYURETHANE FUNCTIONAL MASK SUBSTRATE AND APPLICATION THEREOF
- Publication number 20210353510
- Publication date Nov 18, 2021
- WANHUA CHEMICAL GROUP CO., LTD.
- Xiaoxiao JI
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
COMPOSITION CONTAINING WATER-SOLUBLE NON-IONIC POLYURETHANE DISPERS...
- Publication number 20210346272
- Publication date Nov 11, 2021
- WANHUA CHEMICAL GROUP CO., LTD.
- Bangbang LI
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE