Frieder Kropfgans

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Freiberg, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for producing doped gallium arsenide substrate wafers havin...
- Patent number 8,815,392
- Issue date Aug 26, 2014
- Freiberger Compound Materials GmbH
- Ulrich Kretzer
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Process for producing doped gallium arsenide substrate wafers havin...
- Patent number 8,329,295
- Issue date Dec 11, 2012
- Freiberger Compound Materials GmbH
- Ulrich Kretzer
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Patents Applicationslast 30 patents

Information Patent Application
PROCESS FOR PRODUCING DOPED GALLIUM ARSENIDE SUBSTRATE WAFERS HAVIN...
- Publication number 20130320242
- Publication date Dec 5, 2013
- FREIBERGER COMPOUND MATERIALS GMBH
- Ulrich KRETZER
- C30 - CRYSTAL GROWTH
Information Patent Application
PROCESS FOR PRODUCING DOPED GALLIUM ARSENIDE SUBSTRATE WAFERS HAVIN...
- Publication number 20100006777
- Publication date Jan 14, 2010
- FREIBERGER COMPOUND MATERIALS GmbH
- Ulrich KRETZER
- C30 - CRYSTAL GROWTH