Inventor · disambiguated record
Rikuro Obara
Also filed as: OBARA RIKURO
82 granted patents·32 pending applications·912 citations·filing 1993–2006
99Inventor score
Top patents by PatentIndex Score
114 records- 0195US7510330B2Fluid dynamic bearing and a storage disk drive with a spindle motor having the fluid dynamic bearingMINEBEA CO LTD·Filed 2005·Granted Mar 31, 2009·20 cites·17 claims
- 0293US6655847B2Pivot bearing assemblyMINEBEA CO LTD·Filed 2001·Granted Dec 2, 2003·35 cites·10 claims
- 0389US6916160B2Axial electric fan blower with electric components housing sealed from moisture, dirt and dust or other harmful gasMINEBEA KK·Filed 2001·Granted Jul 12, 2005·40 cites·5 claims
- 0488US7306374B2Special type bearing deviceMINEBEA CO LTD·Filed 2006·Granted Dec 11, 2007·8 cites·2 claims
- 0588US6799893B2Special type bearing deviceMINEBEA CO LTD·Filed 2002·Granted Oct 5, 2004·20 cites·6 claims
- 0687US6563243B2Spindle motorMINEBEA KK·Filed 2001·Granted May 13, 2003·20 cites·11 claims
- 0785US6511303B2Fan blower with durable bearing structureMINEBEA KK·Filed 2001·Granted Jan 28, 2003·34 cites·15 claims
- 0885US6395677B1Material for bearing retainerMINEBEA CO LTD·Filed 2001·Granted May 28, 2002·25 cites·6 claims
- 0982US6965493B2Hydrodynamic pressure bearing system and spindle motor using the sameMINEBEA CO LTD·Filed 2002·Granted Nov 15, 2005·15 cites·3 claims
- 1082US6176620B1Composite bearing structureMINEBEA CO LTD·Filed 1999·Granted Jan 23, 2001·34 cites·19 claims
- 1181US6512316B2Spindle motorMINEBEA KK·Filed 2001·Granted Jan 28, 2003·13 cites·4 claims
- 1279US6420809B1Bearing structure for flat motorMINEBEA CO LTD·Filed 2000·Granted Jul 16, 2002·24 cites·17 claims
- 1378US6599020B2Double seal bearingMINEBEA KK·Filed 2001·Granted Jul 29, 2003·13 cites·7 claims
- 1478US5765275AMethod of manufacturing hard disk drive unitMINEBEA KK·Filed 1996·Granted Jun 16, 1998·26 cites·5 claims
- 1577US6178061B1Hard disk drive unit and method of manufacturing the sameMINEBEA KK·Filed 1998·Granted Jan 23, 2001·25 cites·5 claims
- 1676US6777360B2Ceramic material, method of producing same, and formed product thereofMINEBEA CO LTD·Filed 2002·Granted Aug 17, 2004·14 cites·6 claims
- 1776US6573215B2Material for bearing rolling elementMINEBEA CO LTD·Filed 2001·Granted Jun 3, 2003·14 cites·8 claims
- 1874US6787075B2Method of making synthetic resin composition with lubricative underwater properties containing RBC or CRBC fine powderMINEBEA CO LTD·Filed 2003·Granted Sep 7, 2004·9 cites·19 claims
- 1973US6794774B2Spindle motorMINEBEA KK·Filed 2002·Granted Sep 21, 2004·11 cites·4 claims
- 2073US5698919AIntegral bearing type electric motorMINEBEA KK·Filed 1995·Granted Dec 16, 1997·37 cites·17 claims
- 2172US6734591B2Spindle motorMINEBEA KK·Filed 2003·Granted May 11, 2004·10 cites·11 claims
- 2272US6379129B1BlowerMINEBEA KK·Filed 2000·Granted Apr 30, 2002·18 cites·15 claims
- 2368US6657340B2Motor and method of manufacturing the sameMINEBEA CO LTD·Filed 2001·Granted Dec 2, 2003·12 cites·7 claims
- 2467US7648281B2Fluid dynamic bearing, motor and storage disk deviceMINEBEA CO LTD·Filed 2006·Granted Jan 19, 2010·4 cites·13 claims
- 2566US7144932B2Low-friction, high-dispersion synthetic resin composition containing fine particles of RB ceramic or CRB ceramic and a method for its preparationMINEBEA CO LTD·Filed 2003·Granted Dec 5, 2006·3 cites·65 claims
- 2665US6734590B2MotorMINEBEA CO LTD·Filed 2002·Granted May 11, 2004·10 cites·10 claims
- 2764US6712517B2Sleeve bearing arrangementMINEBEA CO LTD·Filed 2001·Granted Mar 30, 2004·8 cites·6 claims
- 2864US6246137B1Spindle motorMINEBEA CO LTD·Filed 1999·Granted Jun 12, 2001·19 cites·12 claims
- 2963US5556209ADouble-row ball bearingMINEBEA KK·Filed 1994·Granted Sep 17, 1996·21 cites·5 claims
- 3062US6639336B2Spindle motor and manufacturing method thereofMINEBEA CO LTD·Filed 2001·Granted Oct 28, 2003·6 cites·3 claims
- 3162US6102575ACompound bearing apparatusMINEBEA CO LTD·Filed 1999·Granted Aug 15, 2000·19 cites·18 claims
- 3261US7764463B2Fluid dynamic pressure bearing for spindle motors and storage disk drive devices and having ridge portions between grooves in the fluid dynamic pressure bearingMINEBEA CO LTD·Filed 2005·Granted Jul 27, 2010·1 cites·67 claims
- 3360US5808388AElectric drive motor with a compound bearing assemblyMINEBEA KK·Filed 1996·Granted Sep 15, 1998·20 cites·2 claims
- 3458US6855214B2Anti-friction bearingFiled 2001·Granted Feb 15, 2005·7 cites·21 claims
- 3558US6527447B2Sliding of polycrystallized glassMINEBEA CO LTD·Filed 2002·Granted Mar 4, 2003·4 cites·7 claims
- 3656US6683264B2Low profile key switch structureMINEBEA CO LTD·Filed 2003·Granted Jan 27, 2004·9 cites·19 claims
- 3756US6599021B2Compound bearing apparatusMINEBEA KK·Filed 2001·Granted Jul 29, 2003·5 cites·19 claims
- 3856US6181513B1Spindle motor and a hard disk drive apparatus including such a motorMINEBEA KK·Filed 1999·Granted Jan 30, 2001·15 cites·16 claims
- 3955US6308772B1Heat sinkMINEBEA CO LTD·Filed 1999·Granted Oct 30, 2001·19 cites·8 claims
- 4054US7246440B2Spindle motor and method of manufacturing the sameMINEBEA CO LTD·Filed 2003·Granted Jul 24, 2007·5 cites·8 claims
- 4154US6599022B2Bearing apparatusMINEBEA KK·Filed 2001·Granted Jul 29, 2003·4 cites·6 claims
- 4254US5843369AStainless steel for anti-friction bearing and method of makingMINEBEA KK·Filed 1996·Granted Dec 1, 1998·14 cites·10 claims
- 4353US6538354B2Spindle motor with toroidal sealing platesMINEBEA KK·Filed 1998·Granted Mar 25, 2003·10 cites·7 claims
- 4453US6050728ACompound ball bearing type pulleyMINEBEA KK·Filed 1996·Granted Apr 18, 2000·11 cites·16 claims
- 4552US6229237B1Spindle motorMINEBEA CO LTD·Filed 1999·Granted May 8, 2001·9 cites·13 claims
- 4652US6129454ACompound bearing assembly and method and manufacturing the sameMINEBEA KK·Filed 1999·Granted Oct 10, 2000·9 cites·1 claims
- 4752US5967671ABearing structure for motor and motor with the bearing structureMINEBEA KK·Filed 1998·Granted Oct 19, 1999·13 cites·6 claims
- 4852US5841210AElectric drive motor with a compound bearing assemblyMINEBEA KK·Filed 1996·Granted Nov 24, 1998·13 cites·6 claims
- 4952US5826989ACompound ball bearingMINEBEA KK·Filed 1996·Granted Oct 27, 1998·10 cites·3 claims
- 5052US5655846ABearing assembly and method of manufacturing the sameMINEBEA KK·Filed 1996·Granted Aug 12, 1997·13 cites·4 claims
Showing the top 50 of 114 patent records by PatentIndex Score.
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