Inventor · disambiguated record
Tadayuki Iwakura
Also filed as: IWAKURA TADAYUKI
18 granted patents·4 pending applications·187 citations·filing 1992–2014
94Inventor score
Files withHITACHI GLOBAL STORAGE TECH9HITACHI LTD6HITACHI GLOBAL STORAGE TECH NL2MARUYAMA YOHJI2HGST Netherlands BV1
Top patents by PatentIndex Score
22 records- 0189US5590008AMagnetic disc unit having a plurality of magnetic heads which include multilayer magnetic filmsHITACHI LTD·Filed 1994·Granted Dec 31, 1996·52 cites·30 claims
- 0285US5349745AMethod of fabricating thin-film magnetic headHITACHI LTD·Filed 1993·Granted Sep 27, 1994·39 cites·9 claims
- 0384US7460335B2Magnetic head having first and second protective films with different coefficients of linear expansionHITACHI GLOBAL TECHNOLOGIES JA·Filed 2006·Granted Dec 2, 2008·8 cites·20 claims
- 0483US8054580B2Perpendicular recording magnetic headHITACHI GLOBAL STORAGE TECH NL·Filed 2008·Granted Nov 8, 2011·9 cites·13 claims
- 0579US9230566B1Perpendicular magnetic write head having a controlled magnetization state shieldHGST Netherlands BV·Filed 2014·Granted Jan 5, 2016·4 cites·20 claims
- 0677US8300358B2Magnetic head having write pole, first soft magnetic films separately disposed on both sides of the main pole, and a second soft magnetic film disposed on a trailing side of the main poleMARUYAMA YOHJI·Filed 2008·Granted Oct 30, 2012·4 cites·11 claims
- 0774US7382576B2Thin film magnetic head and magnetic disk apparatus including the sameHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Jun 3, 2008·5 cites·8 claims
- 0873US7551395B2Main pole structure coupled with trailing gap for perpendicular recordingHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Jun 23, 2009·2 cites·14 claims
- 0972US7064925B2Magnetic head for reducing projection of retrieving and writing unit from float surface, and magnetic recording/retrieving apparatus using the sameHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Jun 20, 2006·7 cites·19 claims
- 1071US8542462B2Perpendicular magnetic recording head having a non-magnetic film recessed from the air bearing surface for improved high-density magnetic recordingMARUYAMA YOHJI·Filed 2010·Granted Sep 24, 2013·3 cites·18 claims
- 1168US7061726B2Thin film magnetic headHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Jun 13, 2006·7 cites·14 claims
- 1266US8000058B2Magnetic head for perpendicular recording having pole pieces provided on surface of soft magnetic filmHITACHI GLOBAL STORAGE TECH NL·Filed 2005·Granted Aug 16, 2011·1 cites·18 claims
- 1365US7576952B2Magnetic write head including a magnetic pole piece having a protrusionHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Aug 18, 2009·6 cites·24 claims
- 1463US5296979AMagnetic disc apparatus with thin film head suitable for high-density recordingHITACHI LTD·Filed 1992·Granted Mar 22, 1994·14 cites·36 claims
- 1562US6483663B2Thin film magnetic head and magnetic disk apparatus including the sameHITACHI LTD·Filed 1999·Granted Nov 19, 2002·14 cites·6 claims
- 1661US6877212B2Manufacturing method of a thin film magnetic headHITACHI GLOBAL STORAGE TECH·Filed 2001·Granted Apr 12, 2005·6 cites·4 claims
- 1757US7262940B2Separate read/write magnetic headHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Aug 28, 2007·3 cites·5 claims
- 1854US7068467B2Thin film magnetic head and magnetic disk apparatus including the sameHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Jun 27, 2006·3 cites·25 claims
- 1953US2009290257A1Magnetic head for perpendicular recording and magnetic recording apparatusKIMURA WATARU·Filed 2009·Application pending·0 cites
- 2043US2002071210A1Thin film magnetic heads and a method of producing the sameHITACHI LTD·Filed 2002·Application pending·0 cites
- 2143US2002060880A1Thin film magnetic heads and a method of producing the sameHITACHI LTD·Filed 2002·Application pending·0 cites
- 2241US2004246621A1Magnetic head whose composite magnetic core is recessed from air bearing surfaceHITACHI GLOBAL STORAGE TECH·Filed 2004·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →