Andreas Ehlert

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Mehring, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for producing a semiconductor wafer
- Patent number 6,416,393
- Issue date Jul 9, 2002
- Wacker Siltronic Gesellschaft fur Halbleitermaterialien AG
- Laszlo Fabry
- B24 - GRINDING POLISHING
Information Patent Grant
Method and device for nondestructive detection of crystal defects
- Patent number 6,362,487
- Issue date Mar 26, 2002
- Wacker Siltronic Gesellschaft fur Halbleitermaterialien AG
- Andreas Ehlert
- C30 - CRYSTAL GROWTH
Information Patent Grant
Method for pulling a single crystal
- Patent number 6,267,815
- Issue date Jul 31, 2001
- Wacker Siltronic Gesellschaft fur Halbleitermaterialien AG
- Andreas Ehlert
- C30 - CRYSTAL GROWTH

Patents Applicationslast 30 patents

Information Patent Application
Process for producing a semiconductor wafer
- Publication number 20010036797
- Publication date Nov 1, 2001
- WACKER SILTRONIC GESELLSCHAFT FUR HALBLEITERMATERIALIEN AG
- Laszlo Fabry
- B24 - GRINDING POLISHING