Inventor · disambiguated record
Tetsuya Okai
Also filed as: OKAI TETSUYA
13 granted patents·3 pending applications·100 citations·filing 1988–2010
91Inventor score
Files withHITACHI LTD7HITACHI GLOBAL STORAGE TECH6HITACHI GLOBAL STORAGE TECH NL1KUDO KAZUE1MARUYAMA YOHJI1
Top patents by PatentIndex Score
16 records- 0179US7515380B2Magnetic head and method for production thereforHITACHI GLOBAL STORAGE TECH·Filed 2007·Granted Apr 7, 2009·3 cites·7 claims
- 0275US5687045AThin film magnetic head and production method thereof and magnetic disk drive equipped with this thin film magnetic headHITACHI LTD·Filed 1995·Granted Nov 11, 1997·30 cites·35 claims
- 0374US7382576B2Thin film magnetic head and magnetic disk apparatus including the sameHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Jun 3, 2008·5 cites·8 claims
- 0473US8351156B2Perpendicular magnetic recording head having a main pole and first and second magnetic films peripheral to the main pole and having different depths from an air bearing surfaceHITACHI GLOBAL STORAGE TECH NL·Filed 2009·Granted Jan 8, 2013·2 cites·19 claims
- 0571US8542462B2Perpendicular 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
- 0666US6898057B2Thin film magnetic head having multiple layered films determining track width imbedded in an insulating film and method of manufacturing the sameHITACHI LTD·Filed 2003·Granted May 24, 2005·6 cites·20 claims
- 0762US6483663B2Thin film magnetic head and magnetic disk apparatus including the sameHITACHI LTD·Filed 1999·Granted Nov 19, 2002·14 cites·6 claims
- 0861US6877212B2Manufacturing method of a thin film magnetic headHITACHI GLOBAL STORAGE TECH·Filed 2001·Granted Apr 12, 2005·6 cites·4 claims
- 0960US4971896AMethod for forming thin film pattern and method for fabricating thin film magnetic head using the sameHITACHI LTD·Filed 1988·Granted Nov 20, 1990·11 cites·24 claims
- 1057US5316617AThin film magnetic head and method of manufacturing the sameHITACHI LTD·Filed 1993·Granted May 31, 1994·13 cites·15 claims
- 1154US7068467B2Thin film magnetic head and magnetic disk apparatus including the sameHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Jun 27, 2006·3 cites·25 claims
- 1253US7267757B2Magnetic head utilizing a CoNiFe alloy with 60-80 weight percent Fe and method for production thereforHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Sep 11, 2007·4 cites·8 claims
- 1345US2006087766A1Thin film magnetic head with small track widthHITACHI GLOBAL STORAGE TECH·Filed 2005·Application pending·0 cites
- 1443US2002071210A1Thin film magnetic heads and a method of producing the sameHITACHI LTD·Filed 2002·Application pending·0 cites
- 1543US2002060880A1Thin film magnetic heads and a method of producing the sameHITACHI LTD·Filed 2002·Application pending·0 cites
- 1640US8537493B2Magnetic head for perpendicular recordingKUDO KAZUE·Filed 2010·Granted Sep 17, 2013·0 cites·20 claims
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