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Hiroshi Yashiki
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Kanagawa, JP
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last 30 patents
Information
Patent Grant
Magnetic disk including protective layer having surface with protru...
Patent number
6,303,205
Issue date
Oct 16, 2001
Hitachi, Ltd.
Hideaki Tanaka
G11 - INFORMATION STORAGE
Information
Patent Grant
Polishing system and method of control of same
Patent number
6,074,275
Issue date
Jun 13, 2000
Speedfam-IPEC, Corporation
Hiroshi Yashiki
B24 - GRINDING POLISHING
Information
Patent Grant
Polishing amount control system and method for same
Patent number
6,062,949
Issue date
May 16, 2000
Speedfam Co., Ltd.
Hiroshi Yashiki
B24 - GRINDING POLISHING
Information
Patent Grant
Cleaning apparatus
Patent number
6,041,465
Issue date
Mar 28, 2000
Speedfam Co., Ltd.
Hiroshi Yashiki
B08 - CLEANING
Information
Patent Grant
Apparatus for washing disc-shaped workpieces
Patent number
6,012,193
Issue date
Jan 11, 2000
Speedfam Co., Ltd.
Yusuke Inoue
B08 - CLEANING
Information
Patent Grant
Magnetic disk including protective layer having surface with magnet...
Patent number
5,930,073
Issue date
Jul 27, 1999
Hitachi, Ltd.
Hideaki Tanaka
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk and method of and apparatus for manufacturing magneti...
Patent number
5,879,569
Issue date
Mar 9, 1999
Hitachi, Ltd.
Hiroshi Matsumoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording medium comprising a protective layer having spec...
Patent number
5,773,124
Issue date
Jun 30, 1998
Hitachi, Ltd.
Fuminori Ishikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording medium and process for producing same
Patent number
5,690,838
Issue date
Nov 25, 1997
Hitachi, Ltd.
Yoshihiro Moriguchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk, method of manufacturing the same and magnetic disk a...
Patent number
5,656,349
Issue date
Aug 12, 1997
Hitachi, Ltd.
Kenichi Gomi
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk including protective layer having surface with protus...
Patent number
5,504,646
Issue date
Apr 2, 1996
Hitachi, Ltd.
Hideaki Tanaka
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk manufacturing method
Patent number
5,411,630
Issue date
May 2, 1995
Hitachi, Ltd.
Norikazu Nagase
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk medium with circumferentially textured surfaces and v...
Patent number
4,939,614
Issue date
Jul 3, 1990
Hitachi, Ltd.
Takaaki Shirakura
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for data compression and restoration
Patent number
4,872,009
Issue date
Oct 3, 1989
Hitachi, Ltd.
Tokuhiro Tsukiyama
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Superprecision lathe
Patent number
4,766,788
Issue date
Aug 30, 1988
Hitachi, Ltd.
Hiroshi Yashiki
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR