Inventor · disambiguated record
Takafumi Asada
Also filed as: ASADA TAKAFUMI
56 granted patents·15 pending applications·872 citations·filing 1981–2019
99Inventor score
Files withMATSUSHITA ELECTRIC INDUSTRIAL CO LTD35PANASONIC CORP12NAMIKI PRECISION JEWEL CO LTD8ASADA TAKAFUMI7ADAMANT NAMIKI PREC JEWEL CO LTD3
Top patents by PatentIndex Score
71 records- 0195US7241050B2Hydrodynamic bearing deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Granted Jul 10, 2007·26 cites·15 claims
- 0294US5504637ADisk rotating device having dynamic-pressure fluid bearingsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1994·Granted Apr 2, 1996·67 cites·20 claims
- 0391US5141338ADynamic pressure type fluid bearing apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1990·Granted Aug 25, 1992·56 cites·2 claims
- 0490US7210850B2Hydrodynamic bearing device, spindle motor and hard disk driving apparatus having the hydrodynamic bearing deviceMATSUSHITA ELECTRIC IND COL LT·Filed 2005·Granted May 1, 2007·18 cites·22 claims
- 0589US6196722B1Hydrodynamic bearingMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Mar 6, 2001·50 cites·10 claims
- 0688US5018881ASelf acting gas bearing apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1989·Granted May 28, 1991·42 cites·5 claims
- 0788US4395817AMethod of making keyboard switchesMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1981·Granted Aug 2, 1983·36 cites·8 claims
- 0887US9869821B2Probe for optical imagingNAMIKI PRECISION JEWEL CO LTD·Filed 2016·Granted Jan 16, 2018·6 cites·8 claims
- 0987US6760187B2Hydrodynamic bearing and disk apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Jul 6, 2004·25 cites·6 claims
- 1087US4892418AHydrodynamic bearing deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1988·Granted Jan 9, 1990·46 cites·9 claims
- 1185US9574870B2Probe for optical imagingNAMIKI PRECISION JEWEL CO LTD·Filed 2016·Granted Feb 21, 2017·10 cites·12 claims
- 1284US7196868B2Hydrodynamic bearing and disk recording/reproducing apparatus having a vent inside a fixed shaftMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Mar 27, 2007·18 cites·9 claims
- 1384US5112141ADisk driving apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1990·Granted May 12, 1992·35 cites·4 claims
- 1484US5057733AModular coil cores for electric motorMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1989·Granted Oct 15, 1991·46 cites·1 claims
- 1581US7527432B2Hydrodynamic bearing type rotary device and recording and reproduction apparatus including the samePANASONIC CORP·Filed 2006·Granted May 5, 2009·7 cites·20 claims
- 1680US8033732B2Hydrodynamic bearing device, and spindle motor equipped with samePANASONIC CORP·Filed 2008·Granted Oct 11, 2011·4 cites·12 claims
- 1778US9709749B2Optical imaging probeNAMIKI PRECISION JEWEL CO LTD·Filed 2015·Granted Jul 18, 2017·3 cites·14 claims
- 1877US7830637B2Hydrodynamic bearing device and disk rotation apparatusPANASONIC CORP·Filed 2009·Granted Nov 9, 2010·4 cites·14 claims
- 1976US5370463AHydrodynamic gas bearingMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted Dec 6, 1994·29 cites·3 claims
- 2076US4573807AFluid bearing deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1985·Granted Mar 4, 1986·24 cites·12 claims
- 2175US7950854B2Hydrodynamic bearing type rotary device and recording and reproducing apparatus equipped with samePANASONIC CORP·Filed 2007·Granted May 31, 2011·5 cites·8 claims
- 2275US7740407B2Hydrodynamic bearing type rotary device and recording and reproduction apparatus including the samePANASONIC CORP·Filed 2007·Granted Jun 22, 2010·5 cites·12 claims
- 2375US7186028B2Hydrodynamic bearing deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Granted Mar 6, 2007·6 cites·7 claims
- 2475US4557610ADynamic pressure type fluid bearing deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1983·Granted Dec 10, 1985·30 cites·4 claims
- 2572US7674043B2Hydrodynamic bearing rotary devicePANASONIC CORP·Filed 2007·Granted Mar 9, 2010·5 cites·22 claims
- 2672US7589934B2Hydrodynamic bearing device and disk rotating apparatusPANASONIC CORP·Filed 2008·Granted Sep 15, 2009·3 cites·9 claims
- 2771US7726881B2Hydrodynamic bearing devicePANASONIC CORP·Filed 2009·Granted Jun 1, 2010·3 cites·8 claims
- 2870US7102851B2Hydrodynamic bearing and disk recording/reproducing apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Sep 5, 2006·11 cites·6 claims
- 2970US7011450B2Fluid dynamic bearing device and motor including the deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Mar 14, 2006·11 cites·11 claims
- 3070US5273368AHydrodynamic gas bearingMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1991·Granted Dec 28, 1993·24 cites·7 claims
- 3169US7513689B2Hydrodynamic bearing devicePANASONIC CORP·Filed 2005·Granted Apr 7, 2009·3 cites·14 claims
- 3269US5810480AVertical hydrodynamic bearing apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Sep 22, 1998·24 cites·5 claims
- 3368US7492548B2Hydrodynamic bearing device and disk rotating apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted Feb 17, 2009·8 cites·8 claims
- 3465US5120139ADynamic pressure gas bearingMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1991·Granted Jun 9, 1992·27 cites·13 claims
- 3564US9254117B2Ultrasonic endoscopic probeNAMIKI PRECISION JEWEL CO LTD·Filed 2014·Granted Feb 9, 2016·2 cites·6 claims
- 3663US7862238B2Hydrodynamic bearing rotary device and information apparatusPANASONIC CORP·Filed 2007·Granted Jan 4, 2011·2 cites·20 claims
- 3762US7237956B2Hydrodynamic bearing and disc rotation apparatus using the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Jul 3, 2007·8 cites·4 claims
- 3861US5361470AProcessing apparatus with movable processing toolMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted Nov 8, 1994·22 cites·19 claims
- 3961US4706143ARotary head cylinder device with fluid bearingMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1983·Granted Nov 10, 1987·20 cites·5 claims
- 4060US6933642B2Hydrodynamic gas bearingMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Aug 23, 2005·7 cites·5 claims
- 4158US4706144ARotary head device with fluid bearingMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1983·Granted Nov 10, 1987·11 cites·3 claims
- 4256US5758421AMethod for manufacturing fluid bearingMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Jun 2, 1998·16 cites·5 claims
- 4356US5247819ABore processing deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1992·Granted Sep 28, 1993·15 cites·2 claims
- 4455US7237955B2Hydrodynamic bearing and disc rotation apparatus using the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Jul 3, 2007·5 cites·4 claims
- 4555US5524464AWorkpiece-bore processing apparatus and methodMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1994·Granted Jun 11, 1996·16 cites·6 claims
- 4653US5797303ASleeve bore machining apparatus and sleeve bore machining methodMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Aug 25, 1998·14 cites·12 claims
- 4751US2010052447A1Hydrodynamic bearing device, spindle motor, and information deviceKADOYA YOSUKE·Filed 2009·Application pending·0 cites
- 4850US10422621B2Optical measurement device having a plurality of rotary shafts and displacement detectors for detecting axial displacement of each rotary shaft and using the detected axial displacement for three-dimensional image correctionADAMANT NAMIKI PREC JEWEL CO LTD·Filed 2018·Granted Sep 24, 2019·0 cites·6 claims
- 4950US6604858B2Hydro dynamic gas bearing and disk drive using the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Aug 12, 2003·3 cites·2 claims
- 5049US2011044837A1Sleeve for hydrodynamic bearing device, hydrodynamic bearing device and spindle motor using the same, and method for manufacturing sleeveNIDEC CORP·Filed 2010·Application pending·0 cites
Showing the top 50 of 71 patent records by PatentIndex Score.
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