Inventor · disambiguated record
Masakazu Hirata
Also filed as: HIRATA MASAKAZU
49 granted patents·3 pending applications·337 citations·filing 1992–2022
97Inventor score
Files withHIRATA MASAKAZU14NTN TOYO BEARING CO LTD10SEIKO INSTR INC10SII PRINTEK INC8DENKA COMPANY LTD2
Top patents by PatentIndex Score
52 records- 0196US11919291B2Characteristic table generation system, method of generating characteristic table, and program of generating characteristic tableSII PRINTEK INC·Filed 2021·Granted Mar 5, 2024·2 cites·14 claims
- 0296US6390681B1Dynamic pressure bearing-unitNTN TOYO BEARING CO LTD·Filed 2000·Granted May 21, 2002·76 cites·10 claims
- 0395US7703983B2Sliding material and sliding bearingNTN TOYO BEARING CO LTD·Filed 2005·Granted Apr 27, 2010·18 cites·13 claims
- 0493US5375933ARolling contact bearing protected against electrolytic corrosionNTN TOYO BEARING CO LTD·Filed 1992·Granted Dec 27, 1994·70 cites·2 claims
- 0587US8411391B2Head gimbal assemblyHIRATA MASAKAZU·Filed 2009·Granted Apr 2, 2013·8 cites·20 claims
- 0687US8050170B2Near field optical head and information recording and reproducing deviceSEIKO INSTR INC·Filed 2008·Granted Nov 1, 2011·8 cites·10 claims
- 0786US8011833B2Retainer for roller bearing, and rolling bearingNTN TOYO BEARING CO LTD·Filed 2010·Granted Sep 6, 2011·6 cites·14 claims
- 0882US11254132B2Head chip, liquid jet head, and liquid jet recording deviceSII PRINTEK INC·Filed 2020·Granted Feb 22, 2022·1 cites·7 claims
- 0980US8537646B2Thermally-assisted magnetic recording head having photoelectric wiring lines integrally formed on waveguideHIRATA MASAKAZU·Filed 2009·Granted Sep 17, 2013·4 cites·12 claims
- 1080US5955402ABiodegradable lubricative resin compositionNTN TOYO BEARING CO LTD·Filed 1998·Granted Sep 21, 1999·34 cites·13 claims
- 1179US7910198B2Resinous porous article and method for production thereofNTN TOYO BEARING CO LTD·Filed 2005·Granted Mar 22, 2011·3 cites·10 claims
- 1277US8542559B2Thermally-assisted magnetic recording head having photoelectric wiring lines integrally formed on waveguideHIRATA MASAKAZU·Filed 2009·Granted Sep 24, 2013·3 cites·11 claims
- 1377US8467276B2Thermally-assisted magnetic recording head having photoelectric wiring lines integrally formed on waveguideHIRATA MASAKAZU·Filed 2009·Granted Jun 18, 2013·3 cites·21 claims
- 1477US8351306B2Near field optical head and information recording and reproducing deviceSEIKO INSTR INC·Filed 2008·Granted Jan 8, 2013·3 cites·8 claims
- 1577US7966630B2Head gimbal mechanism and information recording/reproducing apparatusSEIKO INSTR INC·Filed 2007·Granted Jun 21, 2011·3 cites·6 claims
- 1676US8184506B2Near-field optical head with inclined magnetic poles and information recording/reproducing deviceHIRATA MASAKAZU·Filed 2008·Granted May 22, 2012·3 cites·19 claims
- 1774US7771125B2Retainer for rolling bearing, and rolling bearingNTN TOYO BEARING CO LTD·Filed 2005·Granted Aug 10, 2010·4 cites·6 claims
- 1872US8323518B2Fabrication method and fabrication apparatus of head using near field lightHIRATA MASAKAZU·Filed 2007·Granted Dec 4, 2012·2 cites·10 claims
- 1972US8270259B2Near-field optical head including waveguide having polyhedron coreHIRATA MASAKAZU·Filed 2007·Granted Sep 18, 2012·2 cites·11 claims
- 2072US6673750B2Lubricating compositionNTN TOYO BEARING CO LTD·Filed 2002·Granted Jan 6, 2004·12 cites·17 claims
- 2171US5697709ADynamic pressure type bearing deviceNTN TOYO BEARING CO LTD·Filed 1996·Granted Dec 16, 1997·41 cites·13 claims
- 2270USD784735STable top showcaseFUJI ELECTRIC CO LTD·Filed 2015·Granted Apr 25, 2017·13 cites·1 claims
- 2370US8787127B2Near-field light generating element, method of manufacturing near-field light generating element, near-field light head, method of manufacturing near-field light head, and information recording and playback deviceHIRATA MASAKAZU·Filed 2011·Granted Jul 22, 2014·2 cites·19 claims
- 2470US8755255B2Near-field light generating element, method of manufacturing near-field light generating element, near-field light head, method of manufacturing near-field light head, and information recording and playback deviceHIRATA MASAKAZU·Filed 2011·Granted Jun 17, 2014·2 cites·10 claims
- 2568US7113669B2Near field optical head and information recording and reproducing apparatus mounted with the near field optical headSEIKO INSTR INC·Filed 2005·Granted Sep 26, 2006·1 cites·14 claims
- 2667USD860705SBeverage dispenserFUJI ELECTRIC CO LTD·Filed 2017·Granted Sep 24, 2019·10 cites·1 claims
- 2765US8945733B2Magnetic recording mediumTANAKA YOSHIKAZU·Filed 2012·Granted Feb 3, 2015·1 cites·11 claims
- 2861US8054570B2Recording head and data recording and reproducing apparatusSEIKO INTSTRUMENTS INC·Filed 2007·Granted Nov 8, 2011·1 cites·7 claims
- 2957US12421438B2Alumina powder, resin composition, and heat dissipation componentDENKA COMPANY LTD·Filed 2021·Granted Sep 23, 2025·0 cites·8 claims
- 3057US8430991B2Apparatus for producing near field optical headHIRATA MASAKAZU·Filed 2006·Granted Apr 30, 2013·0 cites·18 claims
- 3156US12097701B2Jet parameter generation system, method of generating jet parameter, and non-transitory computer-readable storage medium storing program of generating jet parameterSII PRINTEK INC·Filed 2022·Granted Sep 24, 2024·0 cites·14 claims
- 3256US8982494B2Head gimbal assembly and data recording and reproducing apparatus having the sameHIRATA MASAKAZU·Filed 2009·Granted Mar 17, 2015·0 cites·22 claims
- 3356US8054714B2Near field light assisted magnetic recording head and recording apparatus using the sameSEIKO INSTR INC·Filed 2007·Granted Nov 8, 2011·0 cites·18 claims
- 3454US10710366B2Jet hole plate, liquid jet head, and liquid jet recording apparatusSII PRINTEK INC·Filed 2018·Granted Jul 14, 2020·0 cites·9 claims
- 3554US8351304B2Near-field optical head and information recording/reproducing deviceSEIKO INSTR INC·Filed 2008·Granted Jan 8, 2013·0 cites·6 claims
- 3653US10814630B2Jet hole plate, liquid jet head, liquid jet recording apparatus, and method for manufacturing jet hole plateSII PRINTEK INC·Filed 2018·Granted Oct 27, 2020·0 cites·9 claims
- 3753US8023366B2Near-field optical head and information recording apparatusSEIKO INSTR INC·Filed 2006·Granted Sep 20, 2011·0 cites·11 claims
- 3853US7635437B2Method of manufacturing near field light generation elementSEIKO INSTR INC·Filed 2006·Granted Dec 22, 2009·1 cites·20 claims
- 3952US8842504B2Near-field light head and information recording/reproducing deviceHIRATA MASAKAZU·Filed 2008·Granted Sep 23, 2014·0 cites·9 claims
- 4052US2023134132A1Alumina powder, resin composition, and heat dissipation componentDENKA COMPANY LTD·Filed 2021·Application pending·0 cites
- 4150US8284636B2Near-field thermally assisted magnetic recording head and recording apparatus thereofOUMI MANABU·Filed 2007·Granted Oct 9, 2012·0 cites·18 claims
- 4246US11491787B2Head chip, liquid jet head, and liquid jet recording deviceSII PRINTEK INC·Filed 2020·Granted Nov 8, 2022·0 cites·8 claims
- 4346US11225079B2Head chip, liquid jet head, and liquid jet recording deviceSII PRINTEK INC·Filed 2020·Granted Jan 18, 2022·0 cites·8 claims
- 4446US8379502B2Recording head, method of manufacturing recording head, and information recording and playback apparatusSEIKO INSTR INC·Filed 2011·Granted Feb 19, 2013·0 cites·8 claims
- 4546US8003203B2Resinous oil-retaining article and method for production thereofNTN TOYO BEARING CO LTD·Filed 2006·Granted Aug 23, 2011·0 cites·12 claims
- 4646US7132055B2Method of producing near field optical headSEIKO INSTR INC·Filed 2003·Granted Nov 7, 2006·0 cites·19 claims
- 4745US8493819B2Near-field light generating element, near-field light head, and information recording and reproducing deviceHIRATA MASAKAZU·Filed 2012·Granted Jul 23, 2013·0 cites·10 claims
- 4844US8905805B2Method of manufacturing near-field light generating element and near-field light generating elementSHINOHARA YOKO·Filed 2012·Granted Dec 9, 2014·0 cites·8 claims
- 4943US8599654B2Head gimbal assembly using near-field light and information recording and reproducing apparatus including the sameHIRATA MASAKAZU·Filed 2010·Granted Dec 3, 2013·0 cites·21 claims
- 5041US2002107150A1Lubricant composition and bearingFiled 2001·Application pending·0 cites
Showing the top 50 of 52 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →