Inventor · disambiguated record
Takaaki Shirakura
Also filed as: SHIRAKURA TAKAAKI
13 granted patents·226 citations·filing 1987–2002
93Inventor score
Files withHITACHI LTD13
Top patents by PatentIndex Score
13 records- 0191US5143794AMagnetic recording media for longitudinal recording, process for producing the same and magnetic memory apparatusHITACHI LTD·Filed 1989·Granted Sep 1, 1992·49 cites·8 claims
- 0285US4939614AMagnetic disk medium with circumferentially textured surfaces and varied surface roughness and method of producing the sameHITACHI LTD·Filed 1988·Granted Jul 3, 1990·33 cites·24 claims
- 0382US6627253B2Magnetic recording media for longitudinal recording, process for producing the same and magnetic memory apparatusHITACHI LTD·Filed 2001·Granted Sep 30, 2003·16 cites·6 claims
- 0477US5665478AMagnetic recording media for longitudinal recordingHITACHI LTD·Filed 1994·Granted Sep 9, 1997·32 cites·44 claims
- 0570US6335103B1Magnetic recording media for longitudinal recordingHITACHI LTD·Filed 1997·Granted Jan 1, 2002·21 cites·26 claims
- 0663US5825591AFrictionally sliding head magnet disk apparatusHITACHI LTD·Filed 1996·Granted Oct 20, 1998·16 cites·18 claims
- 0761US4842917AMagnetic recording medium and process for producing the sameHITACHI LTD·Filed 1987·Granted Jun 27, 1989·20 cites·30 claims
- 0854US4786553AMagnetic recording mediumHITACHI LTD·Filed 1987·Granted Nov 22, 1988·13 cites·26 claims
- 0947US6989535B2Atomic force microscopy, method of measuring surface configuration using the same, and method of producing magnetic recording mediumHITACHI LTD·Filed 2002·Granted Jan 24, 2006·7 cites·13 claims
- 1044US5737159AMagnetic disk and its manufacturing methodHITACHI LTD·Filed 1996·Granted Apr 7, 1998·6 cites·5 claims
- 1142US5744256AMagnetic recording medium and method of producing sameHITACHI LTD·Filed 1992·Granted Apr 28, 1998·10 cites·14 claims
- 1235US5985402AMagnetic disk and its manufacturing methodHITACHI LTD·Filed 1992·Granted Nov 16, 1999·2 cites·12 claims
- 1325US5158833AMagnetic recording mediumHITACHI LTD·Filed 1990·Granted Oct 27, 1992·1 cites·23 claims
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