Takatoshi Yamada

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical element and laser irradiation device
- Patent number 11,460,710
- Issue date Oct 4, 2022
- AYASE CO., LTD.
- Takatoshi Yamada
- G02 - OPTICS
Information Patent Grant
Diffraction element, objective lens unit, optical pickup and optica...
- Patent number 7,715,300
- Issue date May 11, 2010
- Sony Corporation
- Satoshi Kawakita
- G11 - INFORMATION STORAGE
Information Patent Grant
Diffraction element, objective lens unit, optical pickup, optical d...
- Patent number 7,463,430
- Issue date Dec 9, 2008
- Sony Corporation
- Takatoshi Yamada
- G11 - INFORMATION STORAGE
Information Patent Grant
Objective lens and optical pickup apparatus, information recording/...
- Patent number 7,054,074
- Issue date May 30, 2006
- Sony Corporation
- Takeshi Mizuno
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical lens, and optical pickup and optical disc apparatus using s...
- Patent number 6,188,528
- Issue date Feb 13, 2001
- Sony Corporation
- Takatoshi Yamada
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL ELEMENT AND LASER IRRADIATION DEVICE
- Publication number 20200241309
- Publication date Jul 30, 2020
- AYASE CO., LTD.
- Takatoshi YAMADA
- G02 - OPTICS
Information Patent Application
DIFFRACTION ELEMENT, OBJECTIVE LENS UNIT, OPTICAL PICKUP, OPTICAL D...
- Publication number 20070258345
- Publication date Nov 8, 2007
- SONY CORPORATION
- Takatoshi Yamada
- G02 - OPTICS
Information Patent Application
OPTICAL PICKUP AND OPTICAL DISC APPARATUS
- Publication number 20070247996
- Publication date Oct 25, 2007
- SONY CORPORATION
- Satoshi Kawakita
- G11 - INFORMATION STORAGE
Information Patent Application
DIFFRACTION ELEMENT, OBJECTIVE LENS UNIT, OPTICAL PICKUP AND OPTICA...
- Publication number 20070230311
- Publication date Oct 4, 2007
- SONY CORPORATION
- Satoshi Kawakita
- G02 - OPTICS
Information Patent Application
DIFFRACTION ELEMENT, OPTICAL PICKUP AND OPTICAL DISC APPARATUS
- Publication number 20070229930
- Publication date Oct 4, 2007
- SONY CORPORATION
- Jin Sato
- G11 - INFORMATION STORAGE
Information Patent Application
Objective lens and optical pickup apparatus, information recording/...
- Publication number 20030231536
- Publication date Dec 18, 2003
- Takeshi Mizuno
- G11 - INFORMATION STORAGE