Inventor
SEKIYAMA NOBUYA
JP9 patents
⚠️ This page may combine multiple inventors who share the name “SEKIYAMA NOBUYA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
8 patentsUS5388020AFeb 7, 1995
Magnetic disk having improved surface configuration and magnetic disk unit including same
HITACHI LTD61 citations96
US5202810AApr 13, 1993
Magnetic disk having an improved surface configuration
HITACHI LTD76 citations96
US5364655ANov 15, 1994
Simultaneous double sides polishing method
HITACHI LTD48 citations92
US5353182AOct 4, 1994
Magnetic disk unit having magnetic disks and a magnetic head with a head slider which is in contact with surfaces of the magnetic disk
HITACHI LTD31 citations92
US5825591AOct 20, 1998
Frictionally sliding head magnet disk apparatus
HITACHI LTD16 citations73
US5680285AOct 21, 1997
Magnetic disk having improved surface configuration and magnetic disk unit including same
HITACHI LTD10 citations73
US5549211AAug 27, 1996
Method of producing magnetic disk
HITACHI LTD5 citations73
US10788064B2Sep 29, 2020
Composite structure
HITACHI LTD1 citations56