Inventor · disambiguated record
Katsushi Hirata
Also filed as: HIRATA KATSUSHI
8 granted patents·6 pending applications·54 citations·filing 2002–2009
84Inventor score
Files withPANASONIC CORP7FUJITSU LTD2HIRATA KATSUSHI2MATSUSHITA ELECTRIC INDUSTRIAL CO LTD2SHIRAISHI TAKANORI1
Top patents by PatentIndex Score
14 records- 0189US7776802B2Hydrodynamic bearing device, and spindle motor and information device using the samePANASONIC CORP·Filed 2005·Granted Aug 17, 2010·10 cites·9 claims
- 0285US7495863B2Hydrodynamic bearing device, and spindle motor and information device using the samePANASONIC CORP·Filed 2005·Granted Feb 24, 2009·8 cites·3 claims
- 0381US6685356B2Liquid bearing unit and magnetic disk device using the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Feb 3, 2004·23 cites·7 claims
- 0476US7947635B2Hydrodynamic bearing device and spindle motor using the samePANASONIC CORP·Filed 2009·Granted May 24, 2011·2 cites·6 claims
- 0573US7737095B2Hydrodynamic bearing device, and spindle motor and information device using the samePANASONIC CORP·Filed 2006·Granted Jun 15, 2010·2 cites·1 claims
- 0668US7846883B2Hydrodynamic bearing device, and spindle motor and information device using the samePANASONIC CORP·Filed 2007·Granted Dec 7, 2010·1 cites·4 claims
- 0766US7459416B2Fluid bearing unit and spindle motor using the samePANASONIC CORP·Filed 2004·Granted Dec 2, 2008·8 cites·6 claims
- 0855US7781383B2Lubricant for fluid dynamic bearing, spindle motor equipped therewith and magnetic disk unitPANASONIC CORP·Filed 2006·Granted Aug 24, 2010·0 cites·18 claims
- 0953US2010105581A1Lubricating oil composition containing ionic liquidSHIRAISHI TAKANORI·Filed 2009·Application pending·0 cites
- 1047US2010035773A1Lubricating oil composition for hydrodynamic bearing device and hydrodynamic bearing device using sameHIRATA KATSUSHI·Filed 2009·Application pending·0 cites
- 1146US2005282713A1Hydrodynamic bearing device and spindle motor using the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Application pending·0 cites
- 1246US2005115642A1Semiconductor substrate and method for fabricating the sameFUJITSU LTD·Filed 2005·Application pending·0 cites
- 1342US2006045397A1Hydrodynamic bearing device, and spindle motor and magnetic disk device using the sameHIRATA KATSUSHI·Filed 2005·Application pending·0 cites
- 1440US2004004271A1Semiconductor substrate and method for fabricating the sameFUJITSU LTD·Filed 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →