Yingfang TONG

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Taiyuan, CN

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Patents Grantslast 30 patents

Information Patent Grant
Method for preparing weathered coal-derived humic acid/urea-formald...
- Patent number 12,180,125
- Issue date Dec 31, 2024
- North University of China
- Yaqing Liu
- C05 - FERTILISERS MANUFACTURE THEREOF

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR PREPARING WEATHERED COAL-DERIVED HUMIC ACID/UREA-FORMALD...
- Publication number 20240174578
- Publication date May 30, 2024
- NORTH UNIVERSITY OF CHINA
- Yaqing LIU
- C05 - FERTILISERS MANUFACTURE THEREOF
Information Patent Application
BIODEGRADABLE UREA-FORMALDEHYDE-BASED SAND-FIXING POLYMER MATERIAL...
- Publication number 20230123541
- Publication date Apr 20, 2023
- NORTH UNIVERSITY OF CHINA
- Yaqing LIU
- C05 - FERTILISERS MANUFACTURE THEREOF