Feng Xu

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Jinan, CN

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Patents Grantslast 30 patents

Information Patent Grant
Multigrade asphalt power additive
- Patent number 6,770,127
- Issue date Aug 3, 2004
- Shandong Heritage Highway Materials Technologies
- Anthony J. Kriech
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
Multigrade asphalt powder additive
- Publication number 20030213407
- Publication date Nov 20, 2003
- Anthony J. Kriech
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...