Inventor · disambiguated record
Heigo Ishihara
Also filed as: FUKKE HAJIME · ISHIHARA HEIGO · MITSUYA MUNEHISA
20 granted patents·219 citations·filing 1978–2003
95Inventor score
Files withHITACHI LTD20
Top patents by PatentIndex Score
20 records- 0180US5543203AMagnetic recording medium having a protective layer which includes high and low surface energy regions and a lubricantHITACHI LTD·Filed 1994·Granted Aug 6, 1996·27 cites·13 claims
- 0277US5958542AThin film magnetic disc and method of manufacturing the discHITACHI LTD·Filed 1996·Granted Sep 28, 1999·36 cites·16 claims
- 0372US4692378AMagnetic recording mediaHITACHI LTD·Filed 1985·Granted Sep 8, 1987·17 cites·10 claims
- 0470US5498457AMagnetic recording medium having a lubricant layer comprising ionically interbonded fluoropolyethers with acidic and basic terminal groupsHITACHI LTD·Filed 1994·Granted Mar 12, 1996·19 cites·18 claims
- 0569US5820964AMagnetic disk, and magnetic disk apparatusHITACHI LTD·Filed 1995·Granted Oct 13, 1998·22 cites·35 claims
- 0666US6555197B1Lubricant, magnetic disk and magnetic disk apparatusHITACHI LTD·Filed 2000·Granted Apr 29, 2003·5 cites·22 claims
- 0765US4966797AProcess for producing magnetic recording medium, magnetic paint, and magnetic diskHITACHI LTD·Filed 1989·Granted Oct 30, 1990·20 cites·26 claims
- 0862US4238341AComposition of magnetic recording mediaHITACHI LTD·Filed 1979·Granted Dec 9, 1980·15 cites·9 claims
- 0956US4985295AMagnetic recording medium and method for producing the sameHITACHI LTD·Filed 1988·Granted Jan 15, 1991·9 cites·10 claims
- 1056US4229312AMethod of manufacturing a paint composite for magnetic filmsHITACHI LTD·Filed 1979·Granted Oct 21, 1980·8 cites·13 claims
- 1154US4794035AMagnetic recording mediumHITACHI LTD·Filed 1987·Granted Dec 27, 1988·9 cites·9 claims
- 1252US5034243AMethod for magnetic orientation of magnetic recording medium using Meissner effect of high Tc superconductorHITACHI LTD·Filed 1989·Granted Jul 23, 1991·8 cites·6 claims
- 1349US5093211AMagnetic recording medium comprising a surface treatment layer provided on the magnetic layer of specified fluorocarboxylic acid amine saltsHITACHI LTD·Filed 1989·Granted Mar 3, 1992·7 cites·6 claims
- 1444US6869536B2Lubricant, magnetic disk and magnetic disk apparatusHITACHI LTD·Filed 2003·Granted Mar 22, 2005·0 cites·13 claims
- 1544US4189508AProcess for the preparation of magnetic recording mediumHITACHI LTD·Filed 1978·Granted Feb 19, 1980·5 cites·9 claims
- 1643US5008128AProcess for producing information recording mediumHITACHI LTD·Filed 1989·Granted Apr 16, 1991·5 cites·10 claims
- 1734US4722859AMagnetic recording mediumHITACHI LTD·Filed 1986·Granted Feb 2, 1988·4 cites·3 claims
- 1832US5073460AMagnetic recording medium and process for producing the sameHITACHI LTD·Filed 1990·Granted Dec 17, 1991·2 cites·37 claims
- 1931US5180608AProcess for producing a rigid magnetic disk by longitudinally generating standing waves or interference waves in an undried applied magnetic paintHITACHI LTD·Filed 1990·Granted Jan 19, 1993·1 cites·14 claims
- 2028US5000982AMagnetic recording medium and method for producing the sameHITACHI LTD·Filed 1990·Granted Mar 19, 1991·0 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →