Inventor
HATA YUJI
JP8 patents
⚠️ This page may combine multiple inventors who share the name “HATA YUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
7 patentsUS5402400AMar 28, 1995
Method and apparatus for eliminating external disturbances in a disk drive device
HITACHI LTD63 citations93
US6153997ANov 28, 2000
Disk apparatus and method of controlling disk apparatus
HITACHI LTD28 citations89
US5241435AAug 31, 1993
Servo information recording method for a storage apparatus
HITACHI LTD7 citations72
US6744591B2Jun 1, 2004
Positioning control method
HITACHI LTD8 citations71
US5606470AFeb 25, 1997
Method and apparatus for controlling magnetoresistive effect element head
HITACHI LTD14 citations69
US6909575B2Jun 21, 2005
Magnetic disk drive and control method thereof
HITACHI LTD6 citations60
US8369040B2Feb 5, 2013
Storage control device and rotation speed control method for storage device
HITACHI LTD3 citations58