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 1505 5
 
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 438 2
 
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 411 110
 
 
H01G CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE 372 3
 
 
C04B LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS 174 5
 
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 173 29
 
 
H01M PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 136 45
 
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 107 64
 
 
H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS 98 35
 
 
H03H IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS 96 13
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Top Patents (by citation)

Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0236,538 MAGNETO-RESISTIVE EFFECT ELEMENT HAVING SIDE SHIELD INTEGRATED WITH UPPER SHIELD Feb 16, 16 Aug 17, 17 [G11B]
2017/0226,018 SEMICONDUCTOR CERAMIC COMPOSITION AND PTC THERMISTOR Feb 01, 17 Aug 10, 17 [H01C, C04B]
2017/0229,163 Magnetic Memory Jan 31, 17 Aug 10, 17 [G11C, H01L]
2017/0229,219 Semiconductor Ceramic Composition And PTC Thermistor Jan 19, 17 Aug 10, 17 [H01C, C04B]
2017/0229,228 COIL COMPONENT Feb 07, 17 Aug 10, 17 [H01F]
2017/0229,229 COIL COMPONENT Feb 07, 17 Aug 10, 17 [H01F]
2017/0229,230 COIL COMPONENT Feb 07, 17 Aug 10, 17 [H01F]
2017/0229,232 COIL DEVICE Feb 01, 17 Aug 10, 17 [H01F]
2017/0229,233 COIL DEVICE Feb 01, 17 Aug 10, 17 [H01F]
2017/0229,636 PIEZOELECTRIC DRIVING DEVICE Jan 31, 17 Aug 10, 17 [H01L]
2017/0229,761 ANTENNA DEVICE ADN PORTABLE WIRELESS DEVICE USING THE SAME Feb 02, 17 Aug 10, 17 [H01Q, H04M]
2017/0218,535 ALUMINA SUBSTRATE Aug 06, 15 Aug 03, 17 [H01L, C30B]
2017/0219,383 DISPLACEMENT DETECTION UNIT AND ANGULAR VELOCITY DETECTION UNIT Jan 24, 17 Aug 03, 17 [G01D, G01P]
2017/0221,616 ALLOY FOR R-T-B BASED SINTERED MAGNET AND R-T-B BASED SINTERED MAGNET Jan 31, 17 Aug 03, 17 [H01F, B22F, C22C]
2017/0221,626 COMMON MODE FILTER Apr 14, 17 Aug 03, 17 [H01F]
2017/0222,119 PIEZOELECTRIC ACTUATOR Jan 27, 17 Aug 03, 17 [H02N, H01L]
2017/0222,562 SWITCHING POWER SUPPLY UNIT Jan 23, 17 Aug 03, 17 [H02M]
2017/0222,616 BRANCHING FILTER Dec 21, 16 Aug 03, 17 [H03H]
2017/0211,204 ALUMINA SUBSTRATE Aug 06, 15 Jul 27, 17 [H01L, C30B]
2017/0213,640 WINDING COMPONENT Jan 17, 17 Jul 27, 17 [H01F]
2017/0214,109 DIRECTIONAL COUPLER Dec 02, 16 Jul 27, 17 [H03H, H01P]
2017/0214,390 BAND-PASS FILTER AND BRANCHING FILTER Nov 18, 16 Jul 27, 17 [H03H]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9735337 Piezoelectric actuator Jul 18, 14 Aug 15, 17 [H02N, H01L]
9735458 Non-reciprocal circuit device and communication apparatus using the same Feb 19, 16 Aug 15, 17 [H01P]
9735752 Apparatus and methods for tunable filters Dec 03, 14 Aug 15, 17 [H03H]
9736942 Coil component, its manufacturing method, and circuit substrate provided with the coil component Jul 15, 16 Aug 15, 17 [H01F, H05K]
9726552 Temperature compensated piezoelectric oscilator device package wherein the base of the package consists of a multilayer thermistor Mar 09, 15 Aug 08, 17 [H03H, G01K, H01L]
9728325 Power feeding coil unit and wireless power transmission device Nov 20, 14 Aug 08, 17 [B60L, H01F]
9728713 Magnetoresistive element, spin MOSFET, magnetic sensor, and magnetic head Nov 14, 14 Aug 08, 17 [G01R, G11B, H01L]
9728782 Negative electrode active material for lithium ion secondary battery, negative electrode for lithium ion secondary battery, and lithium ion secondary battery Apr 22, 15 Aug 08, 17 [C01G, H01M]
9728979 Contactless power transmission circuit Nov 26, 14 Aug 08, 17 [H01F, H02J]
9729080 Power supply control circuit and power supply device Mar 12, 15 Aug 08, 17 [H02M, H02J]
9718673 Component which can be produced at wafer level and method of production Mar 21, 14 Aug 01, 17 [B81C, B81B, H01L]
9720056 Magnetic sensor, magnetic head, and biomagnetic sensor Nov 13, 15 Aug 01, 17 [G01R, G11B, A61B, H01L]
9721592 Perpendicular magnetic recording head with trailing gap covering magnetic pole and side gaps and method of manufacturing same May 26, 16 Aug 01, 17 [G11B]
9715961 Pulse transformer Nov 20, 15 Jul 25, 17 [H01F]
9716390 Power feeding coil unit and wireless power transmission device Nov 20, 14 Jul 25, 17 [H01F, H02J]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
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]
2015/0333,330 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]
2015/0249,205 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]
2015/0157,278 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]
2015/0027,538 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]
2014/0368,963 ELECTRO STATIC DISCHARGE PROTECTION DEVICE ABAN Jan 22, 13 Dec 18, 14 [H05F]
2014/0370,290 IRON NITRIDE BASED MAGNETIC POWDER AND MAGNET USING THE SAME ABAN Jun 10, 14 Dec 18, 14 [H01F, C01B]
2014/0339,458 PIEZOELECTRIC CERAMIC AND PIEZOELECTRIC DEVICE CONTAINING THE SAME ABAN May 14, 13 Nov 20, 14 [H01L]
2014/0311,289 R-T-B BASED SINTERED MAGNET ABAN Apr 22, 14 Oct 23, 14 [H01F]
2014/0296,681 ELECTROCARDIOGRAPH, METHOD FOR MEASURING ELECTROCARDIOGRAM, AND COMPUTER PROGRAM PRODUCT ABAN Mar 04, 14 Oct 02, 14 [A61B]
2014/0233,361 THERMALLY-ASSISTED MAGNETIC RECORDING HEAD AND METHOD OF MANUFACTURING THE SAME ABAN Feb 21, 13 Aug 21, 14 [G11B]
2014/0211,515 DC-DC CONVERTER AND POWER SUPPLY DEVICE HAVING DC-DC CONVERTER ABAN Jan 23, 14 Jul 31, 14 [H02M]

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