Akiyoshi Tachikawa

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Hikari, JP

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Patents Grantslast 30 patents

Information Patent Grant
Silicon semiconductor substrate and preparation thereof
- Patent number 7,208,043
- Issue date Apr 24, 2007
- Siltronic AG
- Akiyoshi Tachikawa
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Silicon semiconductor substrate and process for producing the same
- Patent number 6,805,742
- Issue date Oct 19, 2004
- Siltronic AG
- Akiyoshi Tachikawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Silicon semiconductor substrate and method for production thereof
- Patent number 6,767,848
- Issue date Jul 27, 2004
- Wacker Siltronic Gesellschaft für Halbleiter-Materialien AG
- Akiyoshi Tachikawa
- C30 - CRYSTAL GROWTH

Patents Applicationslast 30 patents

Information Patent Application
Silicon semiconductor substrate and method for production thereof
- Publication number 20030134520
- Publication date Jul 17, 2003
- WACKER SILTRONIC GESELLSCHAFT FUR HALBLEITERMATERIALIEN AG
- Akiyoshi Tachikawa
- C30 - CRYSTAL GROWTH
Information Patent Application
Silicon semiconductor substrate and process for producing the same
- Publication number 20030079674
- Publication date May 1, 2003
- WACKER SILTRONIC GESELLSCHAFT FUR HALBLEITERMATERIALIEN AG
- Akiyoshi Tachikawa
- C30 - CRYSTAL GROWTH
Information Patent Application
Silicon semiconductor substrate and preparation thereof
- Publication number 20030056715
- Publication date Mar 27, 2003
- WACKER SILTRONIC GESELLSCHAFT FUR HALBLEITERMATERIALIEN AG
- Akiyoshi Tachikawa
- C30 - CRYSTAL GROWTH