TAMAGAWA SEIKI CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 5102
 
  
 
G01P MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT 453
 
  
 
G01C MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY 2103
 
  
 
G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR 159
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 1158
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 1446
 
  
 
H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS 186
 
  
 
H03B GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS 162
 
  
 
H03M CODING, DECODING OR CODE CONVERSION, IN GENERAL 1110

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9261986 Trackball device and ultrasonic diagnostic apparatusMar 29, 11Feb 16, 16[G06F]
9166503 Actuator control system and actuator systemNov 10, 10Oct 20, 15[H02J, H02P, G01R]
8674687 Angle detection device and method of manufacturing the sameJun 09, 09Mar 18, 14[H02K]
8364432 Analog angle sensor accuracy correction program correction method, recording medium, and servo driverNov 16, 07Jan 29, 13[G06F, G01P]
8061048 Apparatus for azimuth measurements using gyro sensorsMar 19, 10Nov 22, 11[G01C]
7952065 Position detector and a detected element having a pattern for generating a position signal formed thereonSep 16, 04May 31, 11[G01D]
7928617 Resolver fixing structureJan 27, 06Apr 19, 11[H02K]
7802473 Angular velocity sensorDec 21, 07Sep 28, 10[G01P]
7712223 Apparatus for azimuth measurements using gyro sensorsSep 29, 08May 11, 10[G01C]
7557667 Angular rate sensorJun 22, 07Jul 07, 09[H03B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2014/0149,061 INERTIA SENSOR AND METHOD FOR REDUCING OPERATION ERROR OF THE SAMEAbandonedNov 07, 13May 29, 14[G01P]
8669760 Angle detection system and method of manufacturing the sameExpiredMay 09, 09Mar 11, 14[H02K]
2012/0311,850 METHOD OF DETECTING ROTATIONAL ANGLE OR METHOD OF WINDING FOR SYNCHRONIZING DEVICE WINDINGSAbandonedMar 29, 10Dec 13, 12[H01F]
7987713 Angular velocity sensor with mounting portion and coverExpiredApr 07, 08Aug 02, 11[G01P]
7877848 Method for fabricating an angular velocity sensorExpiredFeb 25, 08Feb 01, 11[H01L, B23P, G01P]
2011/0006,245 POLYMER COATED INORGANIC FINE PARTICLE AND METHOD FOR PREPARING THE SAMEAbandonedDec 03, 08Jan 13, 11[C07F, B05D, H01F]
2010/0323,457 BIOSENSING METHOD USING COATED MAGNETIC FINE PARTICLES AND BIOSENSING APPARATUS FOR BIOSENSING METHODAbandonedDec 01, 08Dec 23, 10[G01N]
2010/0229,647 ANGULAR VELOCITY SENSOR AND METHOD FOR FABRICATING THE SAMEAbandonedMay 27, 10Sep 16, 10[G01C]
7764063 Brushless resolver and method of constructing the sameExpiredOct 23, 03Jul 27, 10[G01B]
2010/0097,055 ANGLE DETECTORAbandonedApr 26, 07Apr 22, 10[G01B]
2009/0303,181 SPHERE ABSOLUTE ANGLE DETECTION SYSTEM, SPHERE ACTUATOR, AND POINTING DEVICEAbandonedNov 29, 07Dec 10, 09[G06T, G06F]
7595576 Brush-less type rotation detector shielding structureExpiredSep 16, 04Sep 29, 09[H02K, G01D]
7550045 Metal surface coating treatment device and surface coated metal manufacturing methodExpiredSep 26, 02Jun 23, 09[B05C]
7472611 Stress detection method for force sensor device with multiple axis sensor and force sensor device employing this methodExpiredDec 11, 07Jan 06, 09[G01L]
7320253 Stress detection method for sensor device with multiple axis sensor and sensor device employing this methodExpiredMar 08, 05Jan 22, 08[G01P]
7240551 Sensor stem, sensor device having the same, and method of manufacturing sensor deviceExpiredFeb 09, 05Jul 10, 07[G01P]
2006/0219,008 Angular velocity sensorAbandonedMar 30, 06Oct 05, 06[G01P]
2006/0087,491 TrackballAbandonedJan 29, 03Apr 27, 06[G09G]
6931927 Tuning fork vibration gyroExpiredJul 24, 03Aug 23, 05[G01P]
2005/0140,652 Track ballAbandonedJan 18, 05Jun 30, 05[G09G]

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