TAMAGAWA SEIKI KABUSHIKI KAISHA

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 998
 
  
 
G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS594
 
  
 
G05B CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 596
 
  
 
H03M CODING, DECODING OR CODE CONVERSION, IN GENERAL 3108
 
  
 
B60L ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL 175
 
  
 
C08F MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 1124
 
  
 
C09D COATING COMPOSITIONS, e.g. PAINTS, VARNISHES, LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR 191
 
  
 
G08C TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS 154
 
  
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 183
 
  
 
H01R ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS 1132

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0267,891 METHOD OF MANUFACTURING POLYMER COATED FERROMAGNETIC PARTICLESJun 02, 17Sep 21, 17[C08F, C09D]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9641052 Connector of vehicular angled connector-integrated servo motor and production method thereofDec 30, 14May 02, 17[H02K, H01R]
7852069 Rotary angle detectorApr 24, 07Dec 14, 10[G01B]
7816912 Angle detector including distinct magnetic stator portionsApr 16, 07Oct 19, 10[G01B]
7476996 Resolver external conductor fixing structureOct 07, 05Jan 13, 09[H02K]
7298138 Stator structure for a rotation detectorDec 09, 02Nov 20, 07[G01B]
7102318 Servo motor with a built-in drive circuitFeb 27, 04Sep 05, 06[G05B]
7042188 Servo motor with a built-in drive circuitNov 10, 03May 09, 06[G05B]
6950633 Rotary non-contact connector and non-rotary non-contact connectorJan 08, 02Sep 27, 05[H04B]
6759759 Rotary contactless connector and non-rotary contactless connectorAug 24, 01Jul 06, 04[B60L]
6411058 ResolverMar 31, 98Jun 25, 02[G05B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2016/0032,130 METHOD OF MANUFACTURING POLYMER COATED FERROMAGNETIC PARTICLESAbandonedAug 20, 15Feb 04, 16[C09D]
8399022 Spherical ferrite nanoparticles and method for producing the sameExpiredDec 28, 07Mar 19, 13[A61K]
8394413 Spherical ferrite nanoparticles and method for producing the sameExpiredApr 02, 12Mar 12, 13[A61K]
2010/0239,864 METHOD OF MANUFACTURING POLYMER COATED FERROMAGNETIC PARTICLES AND POLYMER COATED FERROMAGNETIC PARTICLESAbandonedMar 27, 06Sep 23, 10[B32B]
7388527 Method of detecting abnormality of R/D converterExpiredAug 12, 04Jun 17, 08[H03M]
6933698 Method of driving a servo motor with a built-in drive circuitExpiredNov 10, 03Aug 23, 05[G05B]
6930423 Rotation angle detectorExpiredMay 06, 04Aug 16, 05[H02K, G01B]
6891492 Method of converting an analog signal into a digital signalExpiredSep 27, 04May 10, 05[H03M]
6873074 Terminal connection structure of a resolver stator coilExpiredJun 26, 02Mar 29, 05[H02K]
6838804 Insulation cap structure for rotating machineExpiredDec 09, 02Jan 04, 05[H02K]
2004/0239,196 Motor with a brakeAbandonedMar 01, 04Dec 02, 04[H02K, B60T, H02P]
6791220 Linear actuatorExpiredApr 30, 03Sep 14, 04[H02K]
6774593 Sensor system for controlling a motorExpiredNov 13, 02Aug 10, 04[H02P]
6750577 Stator structure for a rotation detectorExpiredDec 09, 02Jun 15, 04[H02K]
6746490 Winding method and structure for stator coilsExpiredAug 13, 02Jun 08, 04[H02K]
6724109 Resolver statorExpiredDec 05, 01Apr 20, 04[H02K]
6710475 Stator structure having a printed boardExpiredMay 22, 02Mar 23, 04[H02K]
6707401 Calculation processing device of resolver signalExpiredMay 21, 02Mar 16, 04[H03M, H02P]
2004/0015,319 Steering rotation detectorAbandonedJan 10, 03Jan 22, 04[G06F]
6608573 Automatic resolution changing method and circuit for use in digital conversion of two-phase sinusoidal wave signalsExpiredSep 25, 01Aug 19, 03[H03M]

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