Keiji Kumatani

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Hashimoto-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Semiconductor laser device, optical transmission device, optical tr...
- Patent number 7,756,181
- Issue date Jul 13, 2010
- Sharp Kabushiki Kaisha
- Hidenori Kawanishi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
SEMICONDUCTOR LASER DEVICE, OPTICAL TRANSMISSION DEVICE, OPTICAL TR...
- Patent number 6,888,864
- Issue date May 3, 2005
- Sharp Kabushiki Kaisha
- Hidenori Kawanishi
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Semiconductor laser device, optical transmission device, optical tr...
- Publication number 20050163177
- Publication date Jul 28, 2005
- Sharp Kabushiki Kaisha
- Hidenori Kawanishi
- H01 - BASIC ELECTRIC ELEMENTS