Takefumi Ishikura

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Patents Grantslast 30 patents

Information Patent Grant
Diamond ultraviolet light-emitting device
- Patent number 7,009,219
- Issue date Mar 7, 2006
- Tokyo Gas Co., Ltd.
- Takefumi Ishikura
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Diamond ultraviolet luminescent element
- Patent number 6,872,981
- Issue date Mar 29, 2005
- Tokyo Gas Co., Ltd.
- Kenji Horiuchi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
CVD method of manufacturing diamond crystal
- Patent number 6,060,118
- Issue date May 9, 2000
- Tokyo Gas Co., Ltd.
- Takefumi Ishikura
- C30 - CRYSTAL GROWTH
Information Patent Grant
Hydrogen-terminated diamond MISFET and its manufacturing method
- Patent number 6,025,211
- Issue date Feb 15, 2000
- Tokyo Gas Co., Ltd.
- Takefumi Ishikura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Hydrogen-terminated diamond misfet and its manufacturing method
- Patent number 5,854,496
- Issue date Dec 29, 1998
- Tokyo Gas Co., Ltd.
- Takefumi Ishikura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Diamond crystal
- Patent number 5,792,556
- Issue date Aug 11, 1998
- Tokyo Gas Chemicals, Co., Ltd.
- Takefumi Ishikura
- C30 - CRYSTAL GROWTH

Patents Applicationslast 30 patents

Information Patent Application
Diamond high brightness ultraviolet ray emitting element
- Publication number 20040155573
- Publication date Aug 12, 2004
- Kenji Horiuchi
- C30 - CRYSTAL GROWTH