Inventor
YASHIKI HIROSHI
JP15 patents
⚠️ This page may combine multiple inventors who share the name “YASHIKI HIROSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
11 patentsUS4872009AOct 3, 1989
Method and apparatus for data compression and restoration
HITACHI LTD127 citations95
US6303205B1Oct 16, 2001
Magnetic disk including protective layer having surface with protrusions, and substrate therefor
HITACHI LTD24 citations92
US5504646AApr 2, 1996
Magnetic disk including protective layer having surface with protusions and magnetic disk apparatus including the magnetic disk
HITACHI LTD29 citations92
US4766788AAug 30, 1988
Superprecision lathe
HITACHI LTD30 citations92
US5773124AJun 30, 1998
Magnetic recording medium comprising a protective layer having specified electrical resistivity and density
HITACHI LTD37 citations91
US5411630AMay 2, 1995
Magnetic disk manufacturing method
HITACHI LTD29 citations91
US4939614AJul 3, 1990
Magnetic disk medium with circumferentially textured surfaces and varied surface roughness and method of producing the same
HITACHI LTD33 citations90
US5930073AJul 27, 1999
Magnetic disk including protective layer having surface with magnetic disk including protrusions, and magnetic disk apparatus including the magnetic disk
HITACHI LTD9 citations73
US5690838ANov 25, 1997
Magnetic recording medium and process for producing same
HITACHI LTD8 citations73
US5656349AAug 12, 1997
Magnetic disk, method of manufacturing the same and magnetic disk apparatus including the magnetic disk
HITACHI LTD12 citations72
US5879569AMar 9, 1999
Magnetic disk and method of and apparatus for manufacturing magnetic disk
HITACHI LTD3 citations59