Ronghua Luo

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Ningbo, CN

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Patents Grantslast 30 patents

Information Patent Grant
Environmentally friendly material used for making pens
- Patent number 8,173,730
- Issue date May 8, 2012
- Beifa Group Co., Ltd.
- Ronghua Luo
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
ENVIRONMENTALLY FRIENDLY MATERIAL USED FOR MAKING PENS
- Publication number 20100099808
- Publication date Apr 22, 2010
- BEIFA GROUP CO., LTD.
- Ronghua Luo
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...