Hiroyasu Yoshida

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Fujisawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Cooling arrangement for an optical pick-up
- Patent number 8,589,964
- Issue date Nov 19, 2013
- Hitachi Media Electronics Co., Ltd.
- Manabu Ochi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup device with protrusions in a laser beam direction to...
- Patent number 8,448,197
- Issue date May 21, 2013
- Hitachi Media Electronics Co., Ltd.
- Hiroaki Furuichi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup device and method of manufacture therefor
- Patent number 8,169,875
- Issue date May 1, 2012
- Hitachi Media Electronics Co., Ltd.
- Hiroaki Furuichi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical head and optical disc drive
- Patent number 7,830,755
- Issue date Nov 9, 2010
- Hitachi Media Electronics Co., Ltd.
- Manabu Ochi
- G11 - INFORMATION STORAGE
Information Patent Grant
Objective lens driving device and optical disk unit
- Patent number 6,212,140
- Issue date Apr 3, 2001
- Hitachi, Ltd.
- Katsuhiko Kimura
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL PICKUP DEVICE AND METHOD FOR MANUFACTURING THE SAME
- Publication number 20100162281
- Publication date Jun 24, 2010
- Hitachi Media Electronics Co., Ltd.
- Hiroaki FURUICHI
- G11 - INFORMATION STORAGE
Information Patent Application
Optical Pickup Device and Method of Manufacture Therefor
- Publication number 20090323498
- Publication date Dec 31, 2009
- Hiroaki Furuichi
- G11 - INFORMATION STORAGE
Information Patent Application
OPTICAL HEAD AND OPTICAL DISC DRIVE
- Publication number 20080080358
- Publication date Apr 3, 2008
- Manabu OCHI
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pick-up
- Publication number 20060117332
- Publication date Jun 1, 2006
- Manabu Ochi
- G11 - INFORMATION STORAGE