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Hikaru Mizutani
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Minou, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Optical disk, disk substrate, and drive
Patent number
7,027,385
Issue date
Apr 11, 2006
Hitachi Maxell, Ltd.
Katsusuke Shimazaki
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk case
Patent number
6,874,157
Issue date
Mar 29, 2005
Hitachi, Ltd.
Hirofumi Taguchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Single-reel tape cartridge with leader locking mechanism
Patent number
6,739,537
Issue date
May 25, 2004
Hitachi Maxell, Ltd.
Hikaru Mizutani
G11 - INFORMATION STORAGE
Information
Patent Grant
Cartridge in which disk is stored
Patent number
6,687,216
Issue date
Feb 3, 2004
Sanyo Electric Co., LTD
Hiroshi Nakashima
G11 - INFORMATION STORAGE
Information
Patent Grant
Disc cartridge envelope
Patent number
6,431,353
Issue date
Aug 13, 2002
Hitachi Maxell, Ltd.
Hikaru Mizutani
G11 - INFORMATION STORAGE
Information
Patent Grant
Disc cartridge
Patent number
D435854
Issue date
Jan 2, 2001
Hitachi Maxell, Ltd.
Hiroyoshi Takagi
D14 - Recording, communication, or information retrieval equipment
Information
Patent Grant
Magnetic tape cartridge having triple lid assembly
Patent number
6,061,213
Issue date
May 9, 2000
Hitachi Maxell, Ltd.
Hikaru Mizutani
G11 - INFORMATION STORAGE
Information
Patent Grant
Tamper-proof lid lock in disc cartridge
Patent number
5,946,290
Issue date
Aug 31, 1999
Hitachi Maxell, Ltd.
Hikaru Mizutani
G11 - INFORMATION STORAGE
Information
Patent Grant
Disc cartridge with slide shutter having catch pieces
Patent number
5,926,454
Issue date
Jul 20, 1999
Hitachi Maxell, Ltd.
Hikaru Mizutani
G11 - INFORMATION STORAGE
Information
Patent Grant
Disc cartridge lid structure
Patent number
5,910,941
Issue date
Jun 8, 1999
Hitachi Maxell, Ltd.
Hikaru Mizutani
G11 - INFORMATION STORAGE
Information
Patent Grant
Disc cartridge lid structure
Patent number
5,903,541
Issue date
May 11, 1999
Hitachi Maxell, Ltd.
Hikaru Mizutani
G11 - INFORMATION STORAGE
Information
Patent Grant
Single-reel tape cartridge
Patent number
5,893,527
Issue date
Apr 13, 1999
Hitachi Maxell, Ltd.
Hikaru Mizutani
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic tape cartridge having triple lid assembly
Patent number
5,687,047
Issue date
Nov 11, 1997
Hitachi Maxell, Ltd.
Hikaru Mizutani
G11 - INFORMATION STORAGE
Information
Patent Grant
Cassette loading mechanism for recording and playback apparatus
Patent number
5,602,695
Issue date
Feb 11, 1997
Hitachi, Ltd.
Tatsumi Nishijima
G11 - INFORMATION STORAGE
Information
Patent Grant
Tape cartridge having a front lid with a covering wall
Patent number
5,556,051
Issue date
Sep 17, 1996
Hitachi Maxell, Ltd.
Hikaru Mizutani
G11 - INFORMATION STORAGE
Information
Patent Grant
Tape cassette and magnetic recording/reproducing device
Patent number
5,537,279
Issue date
Jul 16, 1996
Hitachi Maxell, Ltd.
Hidekazu Takeda
G11 - INFORMATION STORAGE
Information
Patent Grant
Opening and closing of a front lid of a tape cartridge
Patent number
5,503,348
Issue date
Apr 2, 1996
Hitachi Maxell, Ltd.
Hikaru Mizutani
G11 - INFORMATION STORAGE
Information
Patent Grant
Tape cartridge and recording reproduction apparatus for the tape ca...
Patent number
5,497,279
Issue date
Mar 5, 1996
Hitachi, Ltd.
Tatsumi Nishijima
G11 - INFORMATION STORAGE
Information
Patent Grant
Tape cartridge system implementing variable sized tape cartridges d...
Patent number
5,479,312
Issue date
Dec 26, 1995
Hitachi Maxell, Ltd.
Kenmei Masuda
G11 - INFORMATION STORAGE
Information
Patent Grant
Tape cartridge
Patent number
5,454,527
Issue date
Oct 3, 1995
Hitachi Maxell, Ltd.
Hikaru Mizutani
G11 - INFORMATION STORAGE
Information
Patent Grant
Arrangement for preventing entrance of harmful particles for use in...
Patent number
4,933,797
Issue date
Jun 12, 1990
Hitachi Maxell Ltd.
Hikaru Mizutani
G11 - INFORMATION STORAGE
Information
Patent Grant
Mechanism for preventing loosening of tape in a tape cartridge
Patent number
4,881,696
Issue date
Nov 21, 1989
Hitachi Maxell, Ltd.
Hikaru Mizutani
G11 - INFORMATION STORAGE
Information
Patent Grant
Tape cartidge
Patent number
4,875,640
Issue date
Oct 24, 1989
Hitachi Maxell, Ltd.
Hikaru Mizutani
G11 - INFORMATION STORAGE
Information
Patent Grant
Tape cartridge
Patent number
4,741,496
Issue date
May 3, 1988
Hitachi Maxell, Ltd.
Hikaru Mizutani
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording tape cartridge
Patent number
4,556,153
Issue date
Dec 3, 1985
Hitachi Maxell Ltd.
Hiroyoshi Takagi
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
Disk case
Publication number
20020185393
Publication date
Dec 12, 2002
Hirofumi Taguchi
G11 - INFORMATION STORAGE
Information
Patent Application
Single-reel tape cartridge with leader locking mechanism
Publication number
20010035470
Publication date
Nov 1, 2001
Hikaru Mizutani
G11 - INFORMATION STORAGE