Yoshiyuki Otsuka

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical disk drive
- Patent number 8,427,918
- Issue date Apr 23, 2013
- Teac Corporation
- Yoshiyuki Otsuka
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disk device
- Patent number 7,050,363
- Issue date May 23, 2006
- TEAC Corporation
- Yoshiyuki Otsuka
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical recording apparatus for recording information on a write-on...
- Patent number 6,687,207
- Issue date Feb 3, 2004
- TEAC Corporation
- Kiyoshi Fukuchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Focusing and tracking servo circuit in an optical disk device
- Patent number 6,301,212
- Issue date Oct 9, 2001
- TEAC Corporation
- Mitsumasa Kubo
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for detecting the presence of an optical disk
- Patent number 5,418,766
- Issue date May 23, 1995
- TEAC Corporation
- Shinichi Fujisawa
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
LIGHT-SHIELDING MEMBER AND HEAD-MOUNTED DISPLAY
- Publication number 20230213768
- Publication date Jul 6, 2023
- Sony Interactive Entertainment Inc.
- Yoshiyuki Otsuka
- G02 - OPTICS
Information Patent Application
LIGHT-SHIELDING MEMBER AND HEAD-MOUNTED DISPLAY
- Publication number 20230168414
- Publication date Jun 1, 2023
- Sony Interactive Entertainment Inc.
- Jun Sakamoto
- G02 - OPTICS
Information Patent Application
OPTICAL DISK DRIVE
- Publication number 20110222386
- Publication date Sep 15, 2011
- TEAC CORPORATION
- Yoshiyuki Otsuka
- G11 - INFORMATION STORAGE
Information Patent Application
Optical disk device
- Publication number 20030026175
- Publication date Feb 6, 2003
- TEAC CORPORATION.
- Yoshiyuki Otsuka
- G11 - INFORMATION STORAGE
Information Patent Application
Optical disk recording apparatus
- Publication number 20020001270
- Publication date Jan 3, 2002
- TEAC CORPORATION.
- Kiyoshi Fukuchi
- G11 - INFORMATION STORAGE