Shigehiro Yamada

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Yamatokooriyama-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical pick-up apparatus and semiconductor laser apparatus
- Patent number 7,099,085
- Issue date Aug 29, 2006
- Sharp Kabushiki Kaisha
- Shigehiro Yamada
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor laser device and method for producing the same
- Patent number 6,847,665
- Issue date Jan 25, 2005
- Sharp Kabushiki Kaisha
- Shigehiro Yamada
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical pickup device using a holographic optical element and an am...
- Patent number 5,272,329
- Issue date Dec 21, 1993
- Sharp Kabushiki Kaisha
- Toshiya Nagahama
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Manufacturing method of pickup device
- Publication number 20060079015
- Publication date Apr 13, 2006
- Sharp Kabushiki Kaisha
- Shigehiro Yamada
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pick-up apparatus and semiconductor laser apparatus
- Publication number 20040174801
- Publication date Sep 9, 2004
- Sharp Kabushiki Kaisha
- Shigehiro Yamada
- G11 - INFORMATION STORAGE
Information Patent Application
Semiconductor laser device and method for producing the same
- Publication number 20020141465
- Publication date Oct 3, 2002
- Shigehiro Yamada
- H01 - BASIC ELECTRIC ELEMENTS