Kazuhiko Washizu

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for writing pattern on disk
- Patent number 7,573,669
- Issue date Aug 11, 2009
- Hitachi Global Storage Technologies Netherlands B.V.
- Manabu Saikawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head tester and method of manufacturing magnetic disk drive
- Patent number 7,518,814
- Issue date Apr 14, 2009
- Hitachi Global Storage Technologies Netherlands B.V.
- Hiroshi Umezaki
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk unit and manufacturing method thereof
- Patent number 7,423,825
- Issue date Sep 9, 2008
- Hitachi Global Storage Technologies Netherlands B.V.
- Naoki Shimamura
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of self servo write with low density gas
- Patent number 7,271,974
- Issue date Sep 18, 2007
- Hitachi Global Storage Technologies Netherlands B.V.
- Hiroshi Fukuyama
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Pattern write method and demagnetization state determination method
- Publication number 20070253095
- Publication date Nov 1, 2007
- Hitachi Global Storage Technologies Inc.
- Kazuhiko Washizu
- G11 - INFORMATION STORAGE
Information Patent Application
Method and apparatus for writing pattern on disk
- Publication number 20070247742
- Publication date Oct 25, 2007
- Hitachi Global Storage Technologies Inc.
- Manabu Saikawa
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head tester and method of manufacturing magnetic disk drive
- Publication number 20070046286
- Publication date Mar 1, 2007
- Hitachi Global Storage Technologies Netherlands B.V.
- Hiroshi Umezaki
- G11 - INFORMATION STORAGE
Information Patent Application
Method of self servo write with low density gas
- Publication number 20060023339
- Publication date Feb 2, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Hiroshi Fukuyama
- G11 - INFORMATION STORAGE
Information Patent Application
Disk unit and manufacturing method thereof
- Publication number 20050286156
- Publication date Dec 29, 2005
- Hitachi Global Storage Technologies Netherlands B.V.
- Naoki Shimamura
- G11 - INFORMATION STORAGE