Hideo Suenaga

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical disc device
- Patent number 8,537,651
- Issue date Sep 17, 2013
- Hitachi Media Electronics Co., Ltd.
- Tomoto Kawamura
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical device, optical pickup and optical disk apparatus
- Patent number 7,400,568
- Issue date Jul 15, 2008
- Hitachi, Ltd.
- Seiichi Katou
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk reproducing speed control method and a disk reproducing appara...
- Patent number 5,963,517
- Issue date Oct 5, 1999
- Hitachi, Ltd.
- Harushige Nakagaki
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical reading/reproducing apparatus
- Patent number 4,779,255
- Issue date Oct 18, 1988
- Hitachi, Ltd.
- Toshio Sugiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disc apparatus with access system having object lens control
- Patent number 4,744,069
- Issue date May 10, 1988
- Hitachi, Ltd.
- Toshio Sugiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for reducing semiconductor laser optical noise
- Patent number 4,532,619
- Issue date Jul 30, 1985
- Hitachi, Ltd.
- Toshio Sugiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical tracking system
- Patent number 4,525,823
- Issue date Jun 25, 1985
- Hitachi, Ltd.
- Toshio Sugiyama
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL DISC DEVICE
- Publication number 20120218872
- Publication date Aug 30, 2012
- Tomoto KAWAMURA
- G11 - INFORMATION STORAGE
Information Patent Application
Optical device, optical pickup and optical disk apparatus
- Publication number 20040105378
- Publication date Jun 3, 2004
- Seiichi Katou
- G11 - INFORMATION STORAGE