Yasushi Higashiyama

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Yokohama-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Light receiving element circuit and optical disk drive
- Patent number 7,603,043
- Issue date Oct 13, 2009
- Kabushiki Kaisha Toshiba
- Masahiro Aoki
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording and reproduction apparatus with selectively-enab...
- Patent number 5,784,217
- Issue date Jul 21, 1998
- Kabushiki Kaisha Toshiba
- Yasushi Higashiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording and reproduction apparatus
- Patent number 5,532,887
- Issue date Jul 2, 1996
- Kabushiki Kaisha Toshiba
- Yasushi Higashiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording and reproduction apparatus with plural heads
- Patent number 5,434,720
- Issue date Jul 18, 1995
- Kabushiki Kaisha Toshiba
- Yasushi Higashiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Rotary type magnetic recording and reproduction apparatus
- Patent number 5,276,565
- Issue date Jan 4, 1994
- Kabushiki Kaisha Toshiba
- Yasushi Higashiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical magnetic recording device
- Patent number 4,525,828
- Issue date Jun 25, 1985
- Tokyo Shibaura Denki Kabushiki Kaisha
- Yasushi Higashiyama
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
PHOTODETECTOR CIRCUIT, METHOD FOR DERIVING LASER LIGHT EMISSION AMO...
- Publication number 20070086311
- Publication date Apr 19, 2007
- Yasushi Higashiyama
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Light receiving element circuit and optical disk device
- Publication number 20070035801
- Publication date Feb 15, 2007
- Yasushi Higashiyama
- G11 - INFORMATION STORAGE
Information Patent Application
Light receiving element circuit and optical disk drive
- Publication number 20070014212
- Publication date Jan 18, 2007
- Masahiro Aoki
- G11 - INFORMATION STORAGE
Information Patent Application
Optical disk device and optical disk determination method
- Publication number 20060198264
- Publication date Sep 7, 2006
- Masashi Ueno
- G11 - INFORMATION STORAGE
Information Patent Application
Optical disk apparatus and photodetection signal processing method
- Publication number 20060077798
- Publication date Apr 13, 2006
- Kabushiki Kaisha Toshiba
- Kazuto Kuroda
- G11 - INFORMATION STORAGE