Akimitsu Tsuda

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Patents Grantslast 30 patents

Information Patent Grant
Backlight device
- Patent number 7,852,431
- Issue date Dec 14, 2010
- TPO Hong Kong Holding Limited
- Akimitsu Tsuda
- G02 - OPTICS
Information Patent Grant
Assistant light source and front-light
- Patent number 7,314,303
- Issue date Jan 1, 2008
- TPO Hong Kong Holding Limited
- Akimitsu Tsuda
- G02 - OPTICS