Takayuki Togawa

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Hiraide Takefu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Quartz glass crucible for pulling up silicon single crystal and met...
- Patent number 7,686,887
- Issue date Mar 30, 2010
- Heraeus Quarzglas GmbH & Co. KG
- Yasuo Ohama
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Quartz glass crucible for the pulling up of silicon single crystal
- Patent number 7,299,658
- Issue date Nov 27, 2007
- Heraeus Quarzglas GmbH & Co. KG
- Yasuo Ohama
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method for producing hydrogen-doped silica powder, hydrogen-doped s...
- Patent number 7,074,731
- Issue date Jul 11, 2006
- Heraeus Quarzglas GmbH & Co. KG
- Yasuo Ohama
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Methods for making silica crucibles
- Patent number 6,510,707
- Issue date Jan 28, 2003
- Heraeus Shin-Etsu America, Inc.
- Katsuhiko Kemmochi
- C03 - GLASS MINERAL OR SLAG WOOL

Patents Applicationslast 30 patents

Information Patent Application
Quartz glass crucible for the pulling up of silicon single crystal
- Publication number 20060144327
- Publication date Jul 6, 2006
- Yasuo Ohama
- C30 - CRYSTAL GROWTH
Information Patent Application
Quartz glass crucible for pulling up silicon single crystal and met...
- Publication number 20050235907
- Publication date Oct 27, 2005
- Yasuo Ohama
- C30 - CRYSTAL GROWTH
Information Patent Application
Method for producing hydrogen-doped silica powder, hydrogen-doped s...
- Publication number 20040025783
- Publication date Feb 12, 2004
- Yasuo Ohama
- C30 - CRYSTAL GROWTH
Information Patent Application
Silica crucibles and methods for making the same
- Publication number 20020166340
- Publication date Nov 14, 2002
- Katsuhiko Kemmochi
- C03 - GLASS MINERAL OR SLAG WOOL