Yingjun Wang

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Anyang, CN

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Patents Grantslast 30 patents

Information Patent Grant
Petroleum fracturing proppant prepared from flyash and waste cerami...
- Patent number 9,611,423
- Issue date Apr 4, 2017
- Hebi Tianrui Petroleum Proppant Co., Ltd
- Shengjie Zhang
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...

Patents Applicationslast 30 patents

Information Patent Application
Petroleum Fracturing Proppant Prepared from Flyash and Waste Cerami...
- Publication number 20150152319
- Publication date Jun 4, 2015
- Hebi Tianrui Petroleum Proppant Co., Ltd
- Shengjie Zhang
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...