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Ikuo Kasuga
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Simosuwa-machi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Optical pickup apparatus and method of manufacturing the same
Patent number
6,798,819
Issue date
Sep 28, 2004
Kabushiki Kaisha Sankyo Seiki Seisakusho
Tohru Hotta
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pick-up device
Patent number
6,584,061
Issue date
Jun 24, 2003
Kabushiki Kaisha Sankyo Seiki Seisakusho
Katsushige Yanagisawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pick-up device having a plurality of light sources with dif...
Patent number
6,522,619
Issue date
Feb 18, 2003
Kabushiki Kaisha Sankyo Seiki Seisakusho
Katsushige Yanagisawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pickup apparatus
Patent number
6,369,963
Issue date
Apr 9, 2002
Sankyo Seiki Mfg. Co., Ltd.
Tohru Hotta
G02 - OPTICS
Information
Patent Grant
Optical pickup apparatus for use with various types of optical disks
Patent number
6,125,091
Issue date
Sep 26, 2000
Sankyo Seiki Mfg. Co., Ltd.
Ikuo Kasuga
G11 - INFORMATION STORAGE
Information
Patent Grant
Objective lens driving device capable of holding an objective lens...
Patent number
5,844,881
Issue date
Dec 1, 1998
Kabushiki Kaisha Sankyo Seiki Seisakusho
Ikuo Kasuga
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pickup device with split hologram element that diffracts li...
Patent number
5,761,174
Issue date
Jun 2, 1998
Kabushiki Kaisha Sankyo Seiki Seisakusho
Tadashi Takeda
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pickup device
Patent number
5,517,362
Issue date
May 14, 1996
Sankyo Seiki Mfg. Co., Ltd.
Ikuo Kasuga
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pickup device with wedge shaped and concave lens for correc...
Patent number
5,496,993
Issue date
Mar 5, 1996
Kabushiki Kaisha Sanko Seiki Seisakusho
Ikuo Kasuga
G02 - OPTICS
Information
Patent Grant
Objective actuator for positioning an optical pick-up device
Patent number
5,488,594
Issue date
Jan 30, 1996
K.K. Sankyo Seiki Seisakusho
Fumio Kobayashi
G11 - INFORMATION STORAGE
Information
Patent Grant
Objective lens driving device in an optical pickup
Patent number
4,998,802
Issue date
Mar 12, 1991
Kabushiki Kaisha Sankyo Seiki Seisakusho
Ikuo Kasuga
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pickup with astigmatism correcting lens
Patent number
4,968,874
Issue date
Nov 6, 1990
Kabushiki Kaisha Sankyo Seiki Seisakusho
Ikuo Kasuga
G02 - OPTICS
Information
Patent Grant
Optical pick-up device
Patent number
4,962,999
Issue date
Oct 16, 1990
Kabushiki Kaisha Sankyo Seiki Seisakusho
Ikuo Kasuga
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic objective lens driving apparatus with pivot
Patent number
4,664,476
Issue date
May 12, 1987
Kabushiki Kaisha Sankyo Seiki Seisakusho
Ikuo Kasuga
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
Optical pick-up device and method of manufacturing the same
Publication number
20010043520
Publication date
Nov 22, 2001
Katsushige Yanagisawa
G11 - INFORMATION STORAGE
Information
Patent Application
Optical pick-up device
Publication number
20010002896
Publication date
Jun 7, 2001
Katsushige Yanagisawa
G11 - INFORMATION STORAGE