Inventor · disambiguated record
Keishi Nakashima
Also filed as: NAKASHIMA KEISHI
19 granted patents·266 citations·filing 1983–2004
95Inventor score
Files withALPS ELECTRIC CO LTD19
Top patents by PatentIndex Score
19 records- 0189US7145752B2Magnetic head apparatus having magnetic head slider and magnetic disk apparatus equipped with magnetic head apparatusALPS ELECTRIC CO LTD·Filed 2004·Granted Dec 5, 2006·32 cites·15 claims
- 0288US4807076AThin film magnetic head for use in vertical magnetic recordingALPS ELECTRIC CO LTD·Filed 1987·Granted Feb 21, 1989·40 cites·3 claims
- 0383US5224002AThin-film magnetic head deviceALPS ELECTRIC CO LTD·Filed 1991·Granted Jun 29, 1993·36 cites·2 claims
- 0483US5001591AThin film magnetic headALPS ELECTRIC CO LTD·Filed 1989·Granted Mar 19, 1991·28 cites·2 claims
- 0566US4759118AMethod of manufacturing thin film magnetic headALPS ELECTRIC CO LTD·Filed 1987·Granted Jul 26, 1988·22 cites·2 claims
- 0662US4811142AMagnetic head for vertical magnetic recording and method of producing sameALPS ELECTRIC CO LTD·Filed 1987·Granted Mar 7, 1989·13 cites·9 claims
- 0760US5557489AFlexible cable for floating type magnetic head deviceALPS ELECTRIC CO LTD·Filed 1994·Granted Sep 17, 1996·13 cites·4 claims
- 0858US4768121AMagnetic head formed by composite main pole film and winding core for perpendicular magnetic recordingALPS ELECTRIC CO LTD·Filed 1986·Granted Aug 30, 1988·11 cites·2 claims
- 0958US4638387AComposition for sliding contact part of recording/reproducing apparatusALPS ELECTRIC CO LTD·Filed 1983·Granted Jan 20, 1987·9 cites·10 claims
- 1055US4638391AVertical recording magnetic head having single core body bonded with main magnetic pole in guard layerALPS ELECTRIC CO LTD·Filed 1984·Granted Jan 20, 1987·8 cites·9 claims
- 1155US4603091ARecording medium for perpendicular magnetizationALPS ELECTRIC CO LTD·Filed 1984·Granted Jul 29, 1986·12 cites·1 claims
- 1248US4557769ASoft magnetic materialALPS ELECTRIC CO LTD·Filed 1984·Granted Dec 10, 1985·7 cites·3 claims
- 1346US4657812ARecording medium for perpendicular magnetizationALPS ELECTRIC CO LTD·Filed 1984·Granted Apr 14, 1987·8 cites·3 claims
- 1444US4609593AMagnetic recording mediumALPS ELECTRIC CO LTD·Filed 1984·Granted Sep 2, 1986·8 cites·6 claims
- 1544US4592963AThin-film magnetic head and composite material substrate thereforALPS ELECTRIC CO LTD·Filed 1984·Granted Jun 3, 1986·4 cites·22 claims
- 1643US4641213AMagnetic headALPS ELECTRIC CO LTD·Filed 1984·Granted Feb 3, 1987·4 cites·3 claims
- 1739US4695512AMagnetic head for perpendicular magnetic recordingALPS ELECTRIC CO LTD·Filed 1985·Granted Sep 22, 1987·6 cites·5 claims
- 1834US4622273ARecording medium for perpendicular magnetizationALPS ELECTRIC CO LTD·Filed 1984·Granted Nov 11, 1986·3 cites·2 claims
- 1933US4720757AMagnetic head for vertical magnetic recording and process for producing the sameALPS ELECTRIC CO LTD·Filed 1985·Granted Jan 19, 1988·2 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →