TDK CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology MATTERS Rank in Class
 
 
G11B INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER 1522 5
 
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 481 2
 
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 442 107
 
 
H01G CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE 397 3
 
 
C04B LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS 186 5
 
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 176 33
 
 
H01M PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 141 49
 
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 115 65
 
 
H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS 109 32
 
 
H03H IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS 103 13
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Top Patents (by citation)

Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2018/0075,972 ELECTRONIC COMPONENT Sep 05, 17 Mar 15, 18 [H01G]
2018/0075,973 ELECTRONIC DEVICE Sep 12, 17 Mar 15, 18 [H01G]
2018/0076,379 DIELECTRIC DEVICE Nov 01, 17 Mar 15, 18 [H01L]
2018/0076,380 PIEZOELECTRIC DRIVE DEVICE Sep 05, 17 Mar 15, 18 [H02N, H01L]
2018/0076,713 SWITCH DRIVE CIRCUIT AND SWITCHING POWER SUPPLY DEVICE USING SAME Aug 17, 17 Mar 15, 18 [H02M]
2018/0068,680 MAGNETORESISTANCE EFFECT ELEMENT Mar 29, 16 Mar 08, 18 [G11B, G11C, H01F, H01L]
2018/0068,681 MAGNETORESISTANCE EFFECT ELEMENT Mar 28, 16 Mar 08, 18 [G11B, G11C, H01F, H01L]
2018/0068,771 DUST CORE Sep 01, 17 Mar 08, 18 [H01F, B29C, B29B]
2018/0068,772 MAGNET, MAGNET STACK, AND MOTOR Sep 06, 17 Mar 08, 18 [H01F, H02K]
2018/0057,408 FERRITE COMPOSITION, FERRITE SINTERED BODY, ELECTRONIC DEVICE, AND CHIP COIL Aug 16, 17 Mar 01, 18 [C04B, H01F]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9921275 Magnetic sensor including two bias magnetic field generation units for generating stable bias magnetic field Dec 22, 15 Mar 20, 18 [G01R, H01F]
9922766 Ceramic electronic component Dec 28, 16 Mar 20, 18 [C04B, H01G]
9916929 Electronic component Apr 29, 16 Mar 13, 18 [H01G, H02H, H05K]
9908426 Vehicle and mobile body system Sep 24, 13 Mar 06, 18 [H02G, B60L, H02J]
9909900 Pedometer Aug 25, 14 Mar 06, 18 [A61B, G01C]
9911535 Electronic device Mar 02, 16 Mar 06, 18 [H01G, H05K]
9901291 Activity meter and sleep/awake state recording system Jul 15, 15 Feb 27, 18 [G01P, A61B, G08B]
9903009 Rare earth magnet and method for manufacturing same Jan 17, 12 Feb 27, 18 [C23C, C09D, H01F, B22F, C22C]
9905355 Coil component Jul 01, 15 Feb 27, 18 [H01F]
9905365 Composite electronic device Jul 20, 16 Feb 27, 18 [C04B, H01G, H01F, B32B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2017/0226,018 SEMICONDUCTOR CERAMIC COMPOSITION AND PTC THERMISTOR ABAN Feb 01, 17 Aug 10, 17 [H01C, C04B]
2016/0240,761 THERMOELECTRIC DEVICE ABAN Feb 08, 16 Aug 18, 16 [H01L]
2016/0164,178 ANTENNA DEVICE AND PORTABLE ELECTRONIC DEVICE USING THE SAME ABAN Dec 04, 15 Jun 09, 16 [H01Q]
9224706 Terminal structure, and semiconductor element and module substrate comprising the same Withdrawn Aug 06, 13 Dec 29, 15 [H01L]
2015/0370,125 LIQUID CRYSTAL LENS ABAN Jun 04, 15 Dec 24, 15 [G02F]
2015/0371,766 COIL COMPONENT AND METHOD OF PRODUCING THE SAME ABAN Jun 19, 15 Dec 24, 15 [H01F]
2015/0333,330 LITHIUM ION SECONDARY BATTERY ABAN May 08, 15 Nov 19, 15 [H01M]
2015/0333,362 LITHIUM ION SECONDARY BATTERY ABAN May 08, 15 Nov 19, 15 [H01M]
2015/0303,573 ANTENNA DEVICE ABAN Apr 27, 15 Oct 22, 15 [H01Q]
2015/0249,205 MAGNETIC ELEMENT, AND MAGNETIC HIGH FREQUENCY ELEMENT HAVING THE MAGNETIC ELEMENT ABAN Feb 24, 15 Sep 03, 15 [H01L]
2015/0200,055 LAMINATE-TYPE CERAMIC ELECTRONIC COMPONENTS ABAN Jan 08, 15 Jul 16, 15 [H01G]
2015/0194,328 LOAD PORT APPARATUS ABAN Dec 29, 14 Jul 09, 15 [H01L]
2015/0157,278 ELECTRONIC DEVICE, METHOD, AND STORAGE MEDIUM ABAN Dec 09, 14 Jun 11, 15 [G06T, A61B, G08C]
2015/0136,216 COMPOUND SEMICONDUCTOR SOLAR CELL ABAN Feb 19, 13 May 21, 15 [H01L]
2015/0109,063 MAGNETORESISTIVE EFFECT OSCILLATOR ABAN Oct 16, 14 Apr 23, 15 [H03B]
2015/0096,617 COMPOUND SEMICONDUCTOR SOLAR BATTERY ABAN Feb 28, 13 Apr 09, 15 [H01L]
2015/0061,393 VARIABLE VOLTAGE CIRCUIT ABAN Aug 28, 14 Mar 05, 15 [G05F]
2015/0027,538 COMPOUND SEMICONDUCTOR SOLAR BATTERY AND METHOD OF MANUFACTURING LIGHT ABSORPTION LAYER OF COMPOUND SEMICONDUCTOR SOLAR BATTERY ABAN Feb 28, 13 Jan 29, 15 [H01L]
2015/0001,601 SPIN INJECTION ELECTRODE STRUCTURE AND SPIN TRANSPORT ELEMENT HAVING THE SAME ABAN Feb 12, 13 Jan 01, 15 [H01L]
2015/0006,202 BIOLOGICAL DATA MANAGEMENT METHOD, BIOLOGICAL DATA MANAGEMENT SYSTEM, AND CENTER APPARATUS ABAN Feb 28, 14 Jan 01, 15 [G06F]

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