Inventor · disambiguated record
Masakazu Hirano
Also filed as: HIRANO MASAKAZU
31 granted patents·5 pending applications·687 citations·filing 1989–2004
98Inventor score
Files withFUJITSU LTD10KOBE STEEL LTD10ASAHI OPTICAL CO LTD9PENTAX CORP3KABUSHI KAISHA KOBE SEIKO SHO1
Top patents by PatentIndex Score
36 records- 0198US6980382B2Magnetic disk drive systemFUJITSU LTD·Filed 2002·Granted Dec 27, 2005·125 cites·27 claims
- 0293US6563660B1Actuator control method and storage deviceFUJITSU LTD·Filed 2000·Granted May 13, 2003·43 cites·17 claims
- 0392US6504663B2Disk apparatus and disk medium having a ramp loading mechanismFUJITSU LTD·Filed 2000·Granted Jan 7, 2003·36 cites·20 claims
- 0491US6754027B2Head speed control method, head position detection method and disk unitFUJITSU LTD·Filed 2000·Granted Jun 22, 2004·30 cites·23 claims
- 0590US6522488B2Servo information writing method and storage deviceFUJITSU LTD·Filed 2000·Granted Feb 18, 2003·31 cites·20 claims
- 0689US6258465B1Energy absorbing memberKOBE STEEL LTD·Filed 1998·Granted Jul 10, 2001·63 cites·20 claims
- 0788US6634411B2Gas discharge systems for die-casting machines and methods for discharging gasesTOYOTA JIDOSHOKKI KK·Filed 2002·Granted Oct 21, 2003·16 cites·13 claims
- 0883US6059902AAluminum alloy of excellent machinability and manufacturing method thereofKOBE STEEL LTD·Filed 1997·Granted May 9, 2000·35 cites·11 claims
- 0982US6342111B1Energy-absorbing memberKOBE STEEL LTD·Filed 2000·Granted Jan 29, 2002·23 cites·7 claims
- 1080US5671466AElectrophotographic apparatus and sheet guide mechanismASAHI OPTICAL CO LTD·Filed 1995·Granted Sep 23, 1997·28 cites·37 claims
- 1180US5321479AElectrophotographic apparatusASAHI OPTICAL CO LTD·Filed 1993·Granted Jun 14, 1994·26 cites·8 claims
- 1277US6408591B1Door beam of aluminum alloyKOBE STEEL LTD·Filed 1999·Granted Jun 25, 2002·34 cites·21 claims
- 1375US6639750B1Head loading/unloading control method and storage deviceFUJITSU LTD·Filed 2000·Granted Oct 28, 2003·10 cites·10 claims
- 1474US7019932B2Disk unit having mechanism for loading and unloading head uniformly in circumferential direction of a diskFUJITSU LTD·Filed 2001·Granted Mar 28, 2006·9 cites·16 claims
- 1572US7133243B2Burst position error data write method and magnetic disk unitFUJITSU LTD·Filed 2001·Granted Nov 7, 2006·8 cites·17 claims
- 1672US5528352AElectrophotographic apparatus having original separation meansASAHI OPTICAL CO LTD·Filed 1995·Granted Jun 18, 1996·22 cites·30 claims
- 1771US5592278AContinuous form printer with paper guide mechanismASAHI OPTICAL CO LTD·Filed 1994·Granted Jan 7, 1997·20 cites·13 claims
- 1870US6231995B1Aluminum extruded door beam materialKOBE STEEL LTD·Filed 1998·Granted May 15, 2001·18 cites·30 claims
- 1969US5011547AAluminum alloy composite material for brazingKOBE STEEL LTD·Filed 1989·Granted Apr 30, 1991·28 cites·12 claims
- 2067US7110207B2Load/unload operation control method and storage apparatusFUJITSU LTD·Filed 2001·Granted Sep 19, 2006·6 cites·17 claims
- 2164US6338817B2Aluminum extruded door beam materialKOBE STEEL LTD·Filed 2000·Granted Jan 15, 2002·8 cites·4 claims
- 2261US7002759B2Lens unit for multibeam scanning devicePENTAX CORP·Filed 2004·Granted Feb 21, 2006·7 cites·7 claims
- 2358US6533245B2Valve deviceKOBE STEEL LTD·Filed 2001·Granted Mar 18, 2003·9 cites·12 claims
- 2457US6922268B2Multi-beam scanning devicePENTAX CORP·Filed 2003·Granted Jul 26, 2005·5 cites·10 claims
- 2555US6522496B1Storage unitFUJITSU LTD·Filed 2000·Granted Feb 18, 2003·2 cites·8 claims
- 2654US6690496B2Multi-beam scanning devicePENTAX CORP·Filed 2003·Granted Feb 10, 2004·5 cites·20 claims
- 2752US5452072ATransfer unit mounted on a pivotal upper coverASAHI OPTICAL CO LTD·Filed 1994·Granted Sep 19, 1995·9 cites·14 claims
- 2852US2003207143A1Shock absorbing materialKOBE STEEL LTD·Filed 2003·Application pending·0 cites
- 2948US5274477AElectrophotographic facsimile apparatus having a pivoted upper structureASAHI OPTICAL CO LTD·Filed 1992·Granted Dec 28, 1993·11 cites·5 claims
- 3047US5299051AHousing structure for optical scanning systemASAHI OPTICAL CO LTD·Filed 1992·Granted Mar 29, 1994·12 cites·12 claims
- 3147US2003041925A1Al-Mg-Si based aluminum alloy extrusionKOBE STEEL LTD·Filed 2002·Application pending·0 cites
- 3245US2003008165A1Shock absorbing materialKABUSHI KAISHA KOBE SEIKO SHO·Filed 2002·Application pending·0 cites
- 3340US5365320ASheet warp prevention mechanism employed in a fixing unit of an electrophotographic printerASAHI OPTICAL CO LTD·Filed 1993·Granted Nov 15, 1994·5 cites·21 claims
- 3435US5268715APhotoconductive drum exposure prevention structure in a clamshell-type image forming apparatusASAHI OPTICAL CO LTD·Filed 1991·Granted Dec 7, 1993·3 cites·7 claims
- 3530US2002033988A1Scanner having a light beam incident position adjusting deviceFiled 1999·Application pending·0 cites
- 3630US2002014287A1A1-mg-si based aluminum alloy extrusionFiled 1999·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →