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Mitsumasa Kubo
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Optical disk inspecting apparatus and method
Patent number
8,531,931
Issue date
Sep 10, 2013
Teac Corporation
Mitsumasa Kubo
G11 - INFORMATION STORAGE
Information
Patent Grant
Data recorder having data encryption function and data reproducing...
Patent number
8,261,097
Issue date
Sep 4, 2012
Teac Corporation
Mitsumasa Kubo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Disk drive and information processing system having the same
Patent number
8,036,075
Issue date
Oct 11, 2011
Teac Corporation
Mitsumasa Kubo
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk inspection apparatus
Patent number
8,009,537
Issue date
Aug 30, 2011
Teac Corporation
Mitsumasa Kubo
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 disk apparatus
Patent number
7,050,374
Issue date
May 23, 2006
TEAC Corporation
Kiyoshi Fukuchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical disk unit
Patent number
6,721,248
Issue date
Apr 13, 2004
TEAC Corporation
Mitsumasa Kubo
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
Speed control of a motor
Patent number
6,313,601
Issue date
Nov 6, 2001
TEAC Corporation
Mitsumasa Kubo
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
Method and apparatus for checking the quality of CD-ROMS or the lik...
Patent number
6,236,630
Issue date
May 22, 2001
TEAC Corporation
Mitsumasa Kubo
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for high speed data recovery from CD-ROMs or l...
Patent number
6,044,052
Issue date
Mar 28, 2000
TEAC Corporation
Mitsumasa Kubo
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for checking the quality of CD-ROMs or the lik...
Patent number
5,982,725
Issue date
Nov 9, 1999
TEAC Corporation
Mitsumasa Kubo
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for high speed data recovery from CD-ROMS or l...
Patent number
5,963,520
Issue date
Oct 5, 1999
TEAC Corporation
Mitsumasa Kubo
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for wobble-free data recovery from CD-rom or t...
Patent number
5,862,113
Issue date
Jan 19, 1999
TEAC Corporation
Hiroshi Tsuyuguchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for high speed data recovery from CD-ROMS or l...
Patent number
5,844,872
Issue date
Dec 1, 1998
TEAC Corporation
Mitsumasa Kubo
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk apparatus for detecting address marks from a recording disk ha...
Patent number
5,623,468
Issue date
Apr 22, 1997
Teac Corporation
Naoto Takeda
G11 - INFORMATION STORAGE
Information
Patent Grant
Reproducing rate control apparatus for optical disk
Patent number
5,602,812
Issue date
Feb 11, 1997
Teac Corporation
Tohru Miura
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical disk reproducing device and its seek operation method
Patent number
5,535,183
Issue date
Jul 9, 1996
Teac Corporation
Tohru Miura
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical disk reproducing apparatus for controlling the rotational s...
Patent number
5,521,895
Issue date
May 28, 1996
Teac Corporation
Tohru Miura
G11 - INFORMATION STORAGE
Information
Patent Grant
Digital data reproducing apparatus
Patent number
5,278,815
Issue date
Jan 11, 1994
TEAC Corporation
Akira Mashimo
G11 - INFORMATION STORAGE
Information
Patent Grant
Wide dynamic range digital to analog conversion method and system
Patent number
4,916,449
Issue date
Apr 10, 1990
TEAC Corporation
Mitsumasa Kubo
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Wide dynamic range digital to analog conversion method and systems
Patent number
4,845,498
Issue date
Jul 4, 1989
TEAC Corporation
Mitsumasa Kubo
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Wide dynamic range analog to digital conversion method and system
Patent number
4,751,496
Issue date
Jun 14, 1988
TEAC Corporation
Tetsuro Araki
H03 - BASIC ELECTRONIC CIRCUITRY
Patents Applications
last 30 patents
Information
Patent Application
DISK INSPECTION APPARATUS
Publication number
20100329093
Publication date
Dec 30, 2010
TEAC CORPORATION
Mitsumasa Kubo
G11 - INFORMATION STORAGE
Information
Patent Application
OPTICAL DISK INSPECTING APPARATUS AND METHOD
Publication number
20100091626
Publication date
Apr 15, 2010
TEAC CORPORATION
Mitsumasa Kubo
G11 - INFORMATION STORAGE
Information
Patent Application
DISK DRIVE AND INFORMATION PROCESSING SYSTEM HAVING THE SAME
Publication number
20090016182
Publication date
Jan 15, 2009
TEAC CORPORATION
Mitsumasa Kubo
G11 - INFORMATION STORAGE
Information
Patent Application
DATA RECORDER HAVING DATA ENCRYPTION FUNCTION AND DATA REPRODUCING...
Publication number
20080162945
Publication date
Jul 3, 2008
TEAC CORPORATION
Mitsumasa Kubo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical disk apparatus
Publication number
20030039188
Publication date
Feb 27, 2003
TEAC CORPORATION.
Kiyoshi Fukuchi
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 unit
Publication number
20020003758
Publication date
Jan 10, 2002
TEAC CORPORATION.
Mitsumasa Kubo
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