Christoph Frey

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Burghausen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method for the production of a silica glass crucible with crystalli...
- Patent number 6,946,030
- Issue date Sep 20, 2005
- Wacker-Chemie GmbH
- Fritz Schwertfeger
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Semiconductor wafer made from silicon and method for producing the...
- Patent number 6,843,848
- Issue date Jan 18, 2005
- Siltronic AG
- Wilfried Von Ammon
- C30 - CRYSTAL GROWTH
Information Patent Grant
Process for producing nitrogen-doped semiconductor wafers
- Patent number 6,350,314
- Issue date Feb 26, 2002
- Wacker Siltronic Gesellschaft fur Halbleitermaterialien AG
- Wilfried Von Ammon
- C30 - CRYSTAL GROWTH

Patents Applicationslast 30 patents

Information Patent Application
Method for the production of a silica glass crucible with crystalli...
- Publication number 20030159648
- Publication date Aug 28, 2003
- Fritz Schwertfeger
- C30 - CRYSTAL GROWTH
Information Patent Application
Semiconductor wafer made from silicon and method for producing the...
- Publication number 20010023941
- Publication date Sep 27, 2001
- WACKER SILTRONIC GESELLSCHAFT FUR HALBLEITERMATERIALIEN AG
- Wilfried Von Ammon
- C30 - CRYSTAL GROWTH