P

Inventor

ISHIHARA HEIGO

JP20 patents

Patents

20 patents
US5820964AOct 13, 1998

Magnetic disk, and magnetic disk apparatus

HITACHI LTD22 citations92
US5543203AAug 6, 1996

Magnetic recording medium having a protective layer which includes high and low surface energy regions and a lubricant

HITACHI LTD27 citations92
US5498457AMar 12, 1996

Magnetic recording medium having a lubricant layer comprising ionically interbonded fluoropolyethers with acidic and basic terminal groups

HITACHI LTD19 citations92
US5958542ASep 28, 1999

Thin film magnetic disc and method of manufacturing the disc

HITACHI LTD36 citations89
US4966797AOct 30, 1990

Process for producing magnetic recording medium, magnetic paint, and magnetic disk

HITACHI LTD20 citations81
US4692378ASep 8, 1987

Magnetic recording media

HITACHI LTD17 citations74
US6555197B1Apr 29, 2003

Lubricant, magnetic disk and magnetic disk apparatus

HITACHI LTD5 citations73
US5093211AMar 3, 1992

Magnetic recording medium comprising a surface treatment layer provided on the magnetic layer of specified fluorocarboxylic acid amine salts

HITACHI LTD7 citations73
US4794035ADec 27, 1988

Magnetic recording medium

HITACHI LTD9 citations73
US5034243AJul 23, 1991

Method for magnetic orientation of magnetic recording medium using Meissner effect of high Tc superconductor

HITACHI LTD8 citations72
US4238341ADec 9, 1980

Composition of magnetic recording media

HITACHI LTD15 citations72
US4229312AOct 21, 1980

Method of manufacturing a paint composite for magnetic films

HITACHI LTD8 citations72
US4985295AJan 15, 1991

Magnetic recording medium and method for producing the same

HITACHI LTD9 citations71
US5008128AApr 16, 1991

Process for producing information recording medium

HITACHI LTD5 citations62
US4722859AFeb 2, 1988

Magnetic recording medium

HITACHI LTD4 citations62
US4189508AFeb 19, 1980

Process for the preparation of magnetic recording medium

HITACHI LTD5 citations61
US5073460ADec 17, 1991

Magnetic recording medium and process for producing the same

HITACHI LTD2 citations60
US6869536B2Mar 22, 2005

Lubricant, magnetic disk and magnetic disk apparatus

HITACHI LTD0 citations51
US5180608AJan 19, 1993

Process for producing a rigid magnetic disk by longitudinally generating standing waves or interference waves in an undried applied magnetic paint

HITACHI LTD1 citations51
US5000982AMar 19, 1991

Magnetic recording medium and method for producing the same

HITACHI LTD0 citations49