Akio Yamakawa

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Light irradiation device for recording information in a hologram re...
- Patent number 8,432,591
- Issue date Apr 30, 2013
- Sony Corporation
- Akio Yamakawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Hologram device, tilt detection method, and tilt correction method
- Patent number 8,121,010
- Issue date Feb 21, 2012
- Sony Corporation
- Akio Yamakawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup apparatus, reproduction apparatus, and reproduction...
- Patent number 7,995,445
- Issue date Aug 9, 2011
- Sony Corporation
- Akio Yamakawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus and method for recording and reproducing information from...
- Patent number RE38538
- Issue date Jun 22, 2004
- Sony Corporation
- Akio Yamakawa
- 369 - Dynamic information storage or retrieval
Information Patent Grant
Optical pickup device having a movable-side member driven with a pr...
- Patent number 6,570,828
- Issue date May 27, 2003
- Sony Corporation
- Nobuyasu Kikuchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup for discriminating between and reading different typ...
- Patent number 6,366,543
- Issue date Apr 2, 2002
- Sony Corporation
- Kamon Uemura
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup for discriminating between and reading different typ...
- Patent number 6,222,803
- Issue date Apr 24, 2001
- Sony Corporation
- Kamon Uemura
- G11 - INFORMATION STORAGE
Information Patent Grant
Objective lens, reproducing apparatus and reproducing method
- Patent number 6,104,688
- Issue date Aug 15, 2000
- Sony Corporation
- Nobuyasu Kikuchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk reproducing apparatus
- Patent number 5,963,535
- Issue date Oct 5, 1999
- Sony Corporation
- Akio Yamakawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus and method for recording and reproducing information from...
- Patent number 5,875,164
- Issue date Feb 23, 1999
- Sony Corporation
- Akio Yamakawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Hologram formed on an objective lens for one defracting light beams...
- Patent number 5,751,679
- Issue date May 12, 1998
- Sony Corporation
- Akio Yamakawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and device for identifying disc
- Patent number 5,742,575
- Issue date Apr 21, 1998
- Sony Corporation
- Akio Yamakawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Objective lens with two numerical apertures for reading/writing two...
- Patent number 5,737,294
- Issue date Apr 7, 1998
- Sony Corporation
- Akio Yamakawa
- G02 - OPTICS
Information Patent Grant
Method and apparatus for playing back multilayer disk
- Patent number 5,682,372
- Issue date Oct 28, 1997
- Sony Corporation
- Akio Yamakawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk player
- Patent number 5,506,830
- Issue date Apr 9, 1996
- Sony Corporation
- Seiichiroh Ohishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disc player with phase shift dependent on disk rotation dir...
- Patent number 4,896,309
- Issue date Jan 23, 1990
- Sony Corporation
- Akio Yamakawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical information reproducing apparatus with tilt correction incl...
- Patent number 4,780,865
- Issue date Oct 25, 1988
- Sony Corporation
- Akio Yamakawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for detecting deviations from a mutually perpendicular co...
- Patent number 4,779,256
- Issue date Oct 18, 1988
- Sony Corporation
- Shigeaki Koike
- G11 - INFORMATION STORAGE
Information Patent Grant
Releasable cover locking device
- Patent number 4,412,320
- Issue date Oct 25, 1983
- Sony Corporation
- Akio Yamakawa
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
HOLOGRAM DEVICE, TILT DETECTION METHOD, AND TILT CORRECTION METHOD
- Publication number 20100265808
- Publication date Oct 21, 2010
- SONY CORPORATION
- Akio YAMAKAWA
- G11 - INFORMATION STORAGE
Information Patent Application
LIGHT IRRADIATION DEVICE AND CONTROL METHOD
- Publication number 20100245955
- Publication date Sep 30, 2010
- SONY CORPORATION
- Akio YAMAKAWA
- G11 - INFORMATION STORAGE
Information Patent Application
REPRODUCING DEVICE AND REPRODUCING METHOD
- Publication number 20100225985
- Publication date Sep 9, 2010
- SONY CORPORATION
- Atsushi Fukumoto
- G11 - INFORMATION STORAGE
Information Patent Application
RECORDING/REPRODUCTION METHOD AND HOLOGRAM RECORDING MEDIUM
- Publication number 20100182662
- Publication date Jul 22, 2010
- SONY CORPORATION
- Akio Yamakawa
- G11 - INFORMATION STORAGE
Information Patent Application
LIGHT ILLUMINATING APPARATUS AND LIGHT ILLUMINATING METHOD
- Publication number 20100182663
- Publication date Jul 22, 2010
- SONY CORPORATION
- Akio YAMAKAWA
- G11 - INFORMATION STORAGE
Information Patent Application
OPTICAL PICKUP APPARATUS, REPRODUCTION APPARATUS, AND REPRODUCTION...
- Publication number 20100172002
- Publication date Jul 8, 2010
- SONY CORPORATION
- Akio Yamakawa
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup device
- Publication number 20020176348
- Publication date Nov 28, 2002
- Nobuyasu Kikuchi
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup for discriminating between and reading different typ...
- Publication number 20010019520
- Publication date Sep 6, 2001
- Kamon Uemura
- G11 - INFORMATION STORAGE

Akio Yamakawa

Person

Patents Grantslast 30 patents

Light irradiation device for recording information in a hologram re...

Hologram device, tilt detection method, and tilt correction method

Optical pickup apparatus, reproduction apparatus, and reproduction...

Apparatus and method for recording and reproducing information from...

Optical pickup device having a movable-side member driven with a pr...

Optical pickup for discriminating between and reading different typ...

Optical pickup for discriminating between and reading different typ...

Objective lens, reproducing apparatus and reproducing method

Disk reproducing apparatus

Apparatus and method for recording and reproducing information from...

Hologram formed on an objective lens for one defracting light beams...

Method and device for identifying disc

Objective lens with two numerical apertures for reading/writing two...

Method and apparatus for playing back multilayer disk

Disk player

Optical disc player with phase shift dependent on disk rotation dir...

Optical information reproducing apparatus with tilt correction incl...

Apparatus for detecting deviations from a mutually perpendicular co...

Releasable cover locking device

Patents Applicationslast 30 patents

HOLOGRAM DEVICE, TILT DETECTION METHOD, AND TILT CORRECTION METHOD

LIGHT IRRADIATION DEVICE AND CONTROL METHOD

REPRODUCING DEVICE AND REPRODUCING METHOD

RECORDING/REPRODUCTION METHOD AND HOLOGRAM RECORDING MEDIUM

LIGHT ILLUMINATING APPARATUS AND LIGHT ILLUMINATING METHOD

OPTICAL PICKUP APPARATUS, REPRODUCTION APPARATUS, AND REPRODUCTION...

Optical pickup device

Optical pickup for discriminating between and reading different typ...