Shoichi Takasuka

Person

Osaka, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical element with diffraction grating, semiconductor device, and...
- Patent number 7,139,235
- Issue date Nov 21, 2006
- Matsushita Electric Industrial Co., Ltd.
- Naoki Nakanishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optoelectronic device
- Patent number 7,064,898
- Issue date Jun 20, 2006
- Matsushita Electric Industrial Co., Ltd.
- Shoichi Takasuka
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical head device and optical recording and reproducing apparatus...
- Patent number 7,035,196
- Issue date Apr 25, 2006
- Matsushita Electric Industrial Co., Ltd.
- Shoichi Takasuka
- G11 - INFORMATION STORAGE
Information Patent Grant
Diffractive optical element that polarizes light and an optical pic...
- Patent number 6,947,213
- Issue date Sep 20, 2005
- Matsushita Electric Industrial Co., Ltd.
- Hideyuki Nakanishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor laser device and optical pickup device using the same
- Patent number 6,747,939
- Issue date Jun 8, 2004
- Matsushita Electric Industrial Co., Ltd.
- Yukio Saitoh
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup with improved optical properties
- Patent number 6,735,024
- Issue date May 11, 2004
- Matsushita Electric Industrial Co., Ltd.
- Hideyuki Nakanishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical device with diffraction grating having plural grating regions
- Patent number 6,728,035
- Issue date Apr 27, 2004
- Matsushita Electric Industrial Co., Ltd.
- Shoichi Takasuka
- G11 - INFORMATION STORAGE
Information Patent Grant
Diffractive optical element that polarizes light and an optical pic...
- Patent number 6,728,034
- Issue date Apr 27, 2004
- Matsushita Electric Industrial Co., Ltd.
- Hideyuki Nakanishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Photodetector unit, and optical pickup, optical reproduction appara...
- Patent number 6,597,642
- Issue date Jul 22, 2003
- Matsushita Electric Industrial Co., Ltd.
- Shinichi Ijima
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical device with diffraction grating having plural grating regions
- Patent number 6,501,601
- Issue date Dec 31, 2002
- Matsushita Electric Industrial Co., Ltd.
- Shoichi Takasuka
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for manufacturing an optical pickup
- Patent number 6,473,248
- Issue date Oct 29, 2002
- Matsushita Electronics Industrial Co. Ltd.
- Hideyuki Nakanishi
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Diffractive optical element that polarizes light and an optical pic...
- Publication number 20040233534
- Publication date Nov 25, 2004
- Hideyuki Nakanishi
- G02 - OPTICS
Information Patent Application
Optical pickup with improved optical properties
- Publication number 20030112533
- Publication date Jun 19, 2003
- Hideyuki Nakanishi
- G11 - INFORMATION STORAGE
Information Patent Application
Optical device
- Publication number 20030053211
- Publication date Mar 20, 2003
- Matsushita Electric Industrial Co., Ltd.
- Shoichi Takasuka
- G02 - OPTICS
Information Patent Application
Optical device with diffraction grating having plural grating regions
- Publication number 20030016448
- Publication date Jan 23, 2003
- Matsushita Electric Industrial Co., Ltd.
- Shoichi Takasuka
- G02 - OPTICS
Information Patent Application
Optical head device
- Publication number 20020181384
- Publication date Dec 5, 2002
- Shoichi Takasuka
- G11 - INFORMATION STORAGE
Information Patent Application
Optical device, optical semiconductor device, and optical informati...
- Publication number 20020163874
- Publication date Nov 7, 2002
- Naoki Nakanishi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical head device and optical recording and reproducing apparatus
- Publication number 20020021652
- Publication date Feb 21, 2002
- Shoichi Takasuka
- G11 - INFORMATION STORAGE
Information Patent Application
Semiconductor laser device and optical pickup device using the same
- Publication number 20010019530
- Publication date Sep 6, 2001
- Matsushita Electronics Corporation
- Yukio Saitoh
- G11 - INFORMATION STORAGE

Shoichi Takasuka

Person

Patents Grantslast 30 patents

Optical element with diffraction grating, semiconductor device, and...

Optoelectronic device

Optical head device and optical recording and reproducing apparatus...

Diffractive optical element that polarizes light and an optical pic...

Semiconductor laser device and optical pickup device using the same

Optical pickup with improved optical properties

Optical device with diffraction grating having plural grating regions

Diffractive optical element that polarizes light and an optical pic...

Photodetector unit, and optical pickup, optical reproduction appara...

Optical device with diffraction grating having plural grating regions

Method for manufacturing an optical pickup

Patents Applicationslast 30 patents

Diffractive optical element that polarizes light and an optical pic...

Optical pickup with improved optical properties

Optical device

Optical device with diffraction grating having plural grating regions

Optical head device

Optical device, optical semiconductor device, and optical informati...

Optical head device and optical recording and reproducing apparatus

Semiconductor laser device and optical pickup device using the same