Kei Yasuna

Person

Chiyoda, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Magnetic disk apparatus and servo signal recording method
- Patent number 7,116,509
- Issue date Oct 3, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Kei Yasuna
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk apparatus and servo pattern recording method therefor
- Patent number 7,085,084
- Issue date Aug 1, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Kei Yasuna
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk device and servo write method
- Patent number 6,999,261
- Issue date Feb 14, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Kenichiro Sugiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Servo pattern recording method
- Patent number 6,970,320
- Issue date Nov 29, 2005
- Hitachi Global Storage Technologies Japan, Ltd.
- Kenichiro Sugiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk apparatus and its servo signal recording method
- Patent number 6,906,884
- Issue date Jun 14, 2005
- Hitachi, Ltd.
- Kei Yasuna
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk apparatus and servo signal recording method
- Patent number 6,888,696
- Issue date May 3, 2005
- Hitachi Global Storage Technologies Japan, Ltd.
- Kei Yasuna
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disc apparatus having actuator for head positioning mechanism
- Patent number 6,636,385
- Issue date Oct 21, 2003
- Hitachi, Ltd.
- Kei Yasuna
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording disk apparatus
- Patent number 6,597,532
- Issue date Jul 22, 2003
- Hitachi, Ltd.
- Kazuaki Usui
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Magnetic disk apparatus and servo pattern recording method therefor
- Publication number 20050052769
- Publication date Mar 10, 2005
- Kei Yasuna
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk apparatus and servo signal recording method
- Publication number 20040190184
- Publication date Sep 30, 2004
- Kei Yasuna
- G11 - INFORMATION STORAGE
Information Patent Application
Servo pattern recording method
- Publication number 20040120067
- Publication date Jun 24, 2004
- Kenichiro Sugiyama
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk apparatus and its servo signal recording method
- Publication number 20030043494
- Publication date Mar 6, 2003
- Kei Yasuna
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk device and servo write method
- Publication number 20020186494
- Publication date Dec 12, 2002
- Kenichiro Sugiyama
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk apparatus and servo signal recording method
- Publication number 20020105751
- Publication date Aug 8, 2002
- Kei Yasuna
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disc apparatus and mobile information device
- Publication number 20010015876
- Publication date Aug 23, 2001
- Kei Yasuna
- G11 - INFORMATION STORAGE

Person

Patents Grantslast 30 patents

Magnetic disk apparatus and servo signal recording method

Magnetic disk apparatus and servo pattern recording method therefor

Magnetic disk device and servo write method

Servo pattern recording method

Magnetic disk apparatus and its servo signal recording method

Magnetic disk apparatus and servo signal recording method

Magnetic disc apparatus having actuator for head positioning mechanism

Information recording disk apparatus

Patents Applicationslast 30 patents

Magnetic disk apparatus and servo pattern recording method therefor

Magnetic disk apparatus and servo signal recording method

Servo pattern recording method

Magnetic disk apparatus and its servo signal recording method

Magnetic disk device and servo write method

Magnetic disk apparatus and servo signal recording method

Magnetic disc apparatus and mobile information device