Assignee
TAMAGAWA SEIKI CO LTD
JP·84 granted patents·3 pending applications·1,255 citations·filing 1975–2023
Top patents by PatentIndex Score
87 records- 0190US10084472B1Phase modulation-type redundant two-phase-output resolver and signal output method thereofTAMAGAWA SEIKI CO LTD·Filed 2018·Granted Sep 25, 2018·5 cites·6 claims
- 0290US4918347ACoil winding construction for an electric motorTAMAGAWA SEIKI CO LTD·Filed 1988·Granted Apr 17, 1990·91 cites·3 claims
- 0389US4769567ABrushless DC motor with cogging reductionTAMAGAWA SEIKI CO LTD·Filed 1987·Granted Sep 6, 1988·88 cites·4 claims
- 0487US7123175B2Angle detection apparatus computing phase differences between first and second phase anglesTAMAGAWA SEIKI CO LTD·Filed 2005·Granted Oct 17, 2006·16 cites·19 claims
- 0587US6930423B2Rotation angle detectorTAMAGAWA SEIKI CO LTD·Filed 2004·Granted Aug 16, 2005·29 cites·20 claims
- 0685US6355999B1Twin-shaft concentric motorTAMAGAWA SEIKI CO LTD·Filed 2000·Granted Mar 12, 2002·48 cites·18 claims
- 0783US5834865AHybrid stepping motorTAMAGAWA SEIKI CO LTD·Filed 1996·Granted Nov 10, 1998·56 cites·31 claims
- 0880US7987713B2Angular velocity sensor with mounting portion and coverTAMAGAWA SEIKI CO LTD·Filed 2008·Granted Aug 2, 2011·12 cites·9 claims
- 0980US7476996B2Resolver external conductor fixing structureTAMAGAWA SEIKI CO LTD·Filed 2005·Granted Jan 13, 2009·13 cites·5 claims
- 1078US6759759B2Rotary contactless connector and non-rotary contactless connectorTAMAGAWA SEIKI CO LTD·Filed 2001·Granted Jul 6, 2004·20 cites·3 claims
- 1177US5723921AHybrid-type stepping motorTAMAGAWA SEIKI CO LTD·Filed 1996·Granted Mar 3, 1998·45 cites·8 claims
- 1277US5486731ASinusoidally distributed winding method suitable for a detector windingTAMAGAWA SEIKI CO LTD·Filed 1993·Granted Jan 23, 1996·60 cites·1 claims
- 1376US6278388B1Method of converting an analog signal to digital signal by digitalizing error deviationTAMAGAWA SEIKI CO LTD·Filed 1999·Granted Aug 21, 2001·39 cites·24 claims
- 1473US7042188B2Servo motor with a built-in drive circuitTAMAGAWA SEIKI CO LTD·Filed 2003·Granted May 9, 2006·19 cites·4 claims
- 1572US4951300APrecision position detection deviceTAMAGAWA SEIKI CO LTD·Filed 1989·Granted Aug 21, 1990·22 cites·1 claims
- 1671US7802473B2Angular velocity sensorTAMAGAWA SEIKI CO LTD·Filed 2007·Granted Sep 28, 2010·7 cites·7 claims
- 1771US7102318B2Servo motor with a built-in drive circuitTAMAGAWA SEIKI CO LTD·Filed 2004·Granted Sep 5, 2006·17 cites·8 claims
- 1871US5757182AVariable-reluctance-type angular rotation sensor with sinusoidally distributed windingTAMAGAWA SEIKI CO LTD·Filed 1996·Granted May 26, 1998·37 cites·2 claims
- 1970US5144178ABrushless generator with magnet and claw-tooth dual rotorTAMAGAWA SEIKI CO LTD·Filed 1991·Granted Sep 1, 1992·29 cites·8 claims
- 2069US6933698B2Method of driving a servo motor with a built-in drive circuitTAMAGAWA SEIKI CO LTD·Filed 2003·Granted Aug 23, 2005·15 cites·12 claims
- 2169US6710475B2Stator structure having a printed boardTAMAGAWA SEIKI CO LTD·Filed 2002·Granted Mar 23, 2004·21 cites·4 claims
- 2269US6031307AStator winding method and stator winding structureTAMAGAWA SEIKI CO LTD·Filed 1998·Granted Feb 29, 2000·30 cites·2 claims
- 2369US5920135ATerminal pin structure of resolverTAMAGAWA SEIKI CO LTD·Filed 1998·Granted Jul 6, 1999·36 cites·9 claims
- 2466US7852069B2Rotary angle detectorTAMAGAWA SEIKI CO LTD·Filed 2007·Granted Dec 14, 2010·6 cites·5 claims
- 2566US6750577B2Stator structure for a rotation detectorTAMAGAWA SEIKI CO LTD·Filed 2002·Granted Jun 15, 2004·11 cites·4 claims
- 2664US6724109B2Resolver statorTAMAGAWA SEIKI CO LTD·Filed 2001·Granted Apr 20, 2004·13 cites·10 claims
- 2764US5637998ADigital system for detecting angular positionTAMAGAWA SEIKI CO LTD·Filed 1995·Granted Jun 10, 1997·26 cites·9 claims
- 2863US7388527B2Method of detecting abnormality of R/D converterTAMAGAWA SEIKI CO LTD·Filed 2004·Granted Jun 17, 2008·12 cites·9 claims
- 2963US6891492B1Method of converting an analog signal into a digital signalTAMAGAWA SEIKI CO LTD·Filed 2004·Granted May 10, 2005·12 cites·17 claims
- 3063US6304010B1Hybrid-type stepping motorTAMAGAWA SEIKI CO LTD·Filed 1996·Granted Oct 16, 2001·28 cites·1 claims
- 3161US4795901AAnalog triangular wave output encoderTAMAGAWA SEIKI CO LTD·Filed 1987·Granted Jan 3, 1989·26 cites·4 claims
- 3260US6028383AResolver stator structure having insulation extended portion with connector pinsTAMAGAWA SEIKI CO LTD·Filed 1998·Granted Feb 22, 2000·26 cites·2 claims
- 3359US11253947B2Magnet wire bonding method and bonding structureTAMAGAWA SEIKI CO LTD·Filed 2019·Granted Feb 22, 2022·0 cites·2 claims
- 3459US5796357ADigital angle detecting methodTAMAGAWA SEIKI CO LTD·Filed 1996·Granted Aug 18, 1998·20 cites·4 claims
- 3559US4839552ABrushless DC motorTAMAGAWA SEIKI CO LTD·Filed 1987·Granted Jun 13, 1989·13 cites·3 claims
- 3659US2025369778A1Rotary encoderTAMAGAWA SEIKI CO LTD·Filed 2023·Application pending·0 cites
- 3757US5170111AMethod for controlling power generationTAMAGAWA SEIKI CO LTD·Filed 1991·Granted Dec 8, 1992·18 cites·2 claims
- 3857US4591766ABrushless direct current motorTAMAGAWA SEIKI CO LTD·Filed 1985·Granted May 27, 1986·23 cites·2 claims
- 3956US6608573B2Automatic resolution changing method and circuit for use in digital conversion of two-phase sinusoidal wave signalsTAMAGAWA SEIKI CO LTD·Filed 2001·Granted Aug 19, 2003·9 cites·4 claims
- 4056US5719452AHybrid-type stepping motorTAMAGAWA SEIKI CO LTD·Filed 1996·Granted Feb 17, 1998·21 cites·8 claims
- 4155US9641052B2Connector of vehicular angled connector-integrated servo motor and production method thereofTAMAGAWA SEIKI CO LTD·Filed 2014·Granted May 2, 2017·0 cites·5 claims
- 4255US6044545AStator winding method and stator winding structureTAMAGAWA SEIKI CO LTD·Filed 1998·Granted Apr 4, 2000·19 cites·2 claims
- 4354US4820951AMultiphase small size brushless DC motorTAMAGAWA SEIKI CO LTD·Filed 1987·Granted Apr 11, 1989·20 cites·2 claims
- 4453US6746490B2Winding method and structure for stator coilsTAMAGAWA SEIKI CO LTD·Filed 2002·Granted Jun 8, 2004·5 cites·5 claims
- 4552US12191872B2R/D conversion method and R/D converterTAMAGAWA SEIKI CO LTD·Filed 2020·Granted Jan 7, 2025·0 cites·8 claims
- 4652US5774068AAbsolute signal detecting method and absolute encoderTAMAGAWA SEIKI CO LTD·Filed 1995·Granted Jun 30, 1998·15 cites·5 claims
- 4751US7816912B2Angle detector including distinct magnetic stator portionsTAMAGAWA SEIKI CO LTD·Filed 2007·Granted Oct 19, 2010·1 cites·12 claims
- 4851US6873074B2Terminal connection structure of a resolver stator coilTAMAGAWA SEIKI CO LTD·Filed 2002·Granted Mar 29, 2005·6 cites·7 claims
- 4951US4733120AFlat type stepping motorTAMAGAWA SEIKI CO LTD·Filed 1987·Granted Mar 22, 1988·16 cites·3 claims
- 5050US2022266790A1Resolver-positioning resin pin portion structureTAMAGAWA SEIKI CO LTD·Filed 2022·Application pending·0 cites
Showing the top 50 of 87 patent records by PatentIndex Score.
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