Zhenguo MA

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Tianjin, CN

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Patents Grantslast 30 patents

Information Patent Grant
Method for removing contaminants from silicon wafer surface
- Patent number 7,578,890
- Issue date Aug 25, 2009
- Yuling Liu
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR REMOVING CONTAMINANTS FROM SILICON WAFER SURFACE
- Publication number 20070277847
- Publication date Dec 6, 2007
- Yuling LIU
- H01 - BASIC ELECTRIC ELEMENTS