Toyokazu Takahashi

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Liquid crystal light control device, and method of manufacturing li...
- Patent number 11,662,629
- Issue date May 30, 2023
- Sony Group Corporation
- Toyokazu Takahashi
- G02 - OPTICS
Information Patent Grant
Objective lens, optical pickup apparatus using the same, optical re...
- Patent number 8,125,876
- Issue date Feb 28, 2012
- Sony Corporation
- Motoo Aiba
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup device and optical disk apparatus using the same
- Patent number 7,826,328
- Issue date Nov 2, 2010
- Sony Corporation
- Toyokazu Takahashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup-use object lens, optical pickup and optical disk unit
- Patent number 7,050,379
- Issue date May 23, 2006
- Sony Corporation
- Toyokazu Takahashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Objective lens unit for optical pickup, optical pickup and disc dri...
- Patent number 6,819,491
- Issue date Nov 16, 2004
- Sony Corporation
- Toyokazu Takahashi
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
LIQUID CRYSTAL LIGHT CONTROL DEVICE, AND METHOD OF MANUFACTURING LI...
- Publication number 20220155624
- Publication date May 19, 2022
- SONY GROUP CORPORATION
- TOYOKAZU TAKAHASHI
- G02 - OPTICS
Information Patent Application
OBJECTIVE LENS, OPTICAL PICKUP APPARATUS USING THE SAME, OPTICAL RE...
- Publication number 20100103801
- Publication date Apr 29, 2010
- SONY CORPORATION
- Motoo Aiba
- G11 - INFORMATION STORAGE
Information Patent Application
OPTICAL PICKUP DEVICE AND OPTICAL DISK APPARATUS USING THE SAME
- Publication number 20080062848
- Publication date Mar 13, 2008
- SONY CORPORATION
- Toyokazu TAKAHASHI
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup-use object lens, optical pickup and optical disk unit
- Publication number 20040114245
- Publication date Jun 17, 2004
- Toyokazu Takahashi
- G02 - OPTICS
Information Patent Application
Objective lens unit for optical pickup, optical pickup and disc dri...
- Publication number 20030174416
- Publication date Sep 18, 2003
- Toyokazu Takahashi
- G02 - OPTICS