Aki Kawamura

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Tokyo, JP

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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