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 1571 5
 
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 410 2
 
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 403 111
 
 
H01G CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE 358 3
 
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 177 29
 
 
C04B LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS 168 5
 
 
H01M PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 137 42
 
 
H03H IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS 121 12
 
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 102 67
 
 
H01P WAVEGUIDES; RESONATORS, LINES OR OTHER DEVICES OF THE WAVEGUIDE TYPE 87 5
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Top Patents (by citation)

Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0043,668 WIRELESS POWER SUPPLY SYSTEM AND WIRELESS POWER TRANSMISSION SYSTEM May 14, 15 Feb 16, 17 [H01F, B60L, H02J]
2017/0047,151 RARE-EARTH PERMANENT MAGNET Mar 10, 15 Feb 16, 17 [H01F, B22F, C22C]
2017/0040,092 SEMICONDUCTOR CERAMIC COMPOSITION AND PTC THERMISTOR Jul 28, 16 Feb 09, 17 [H01C]
2017/0040,525 PIEZOELECTRIC ELEMENT AND PIEZOELECTRIC ACTUATOR Aug 03, 16 Feb 09, 17 [H01L]
2017/0040,661 DIRECTIONAL COUPLER Jul 11, 16 Feb 09, 17 [H03H, H01P]
2017/0041,082 PIEZOELECTRIC MODULE Aug 08, 16 Feb 09, 17 [H04R, H01L, H04B]
2017/0042,066 ELECTRONIC CIRCUIT DEVICE AND HEAT SINK STRUCTURE FOR THE SAME Aug 04, 16 Feb 09, 17 [H05K]
2017/0030,742 CORRECTION APPARATUS AND METHOD FOR ANGLE SENSOR, AND ANGLE SENSOR Jun 14, 16 Feb 02, 17 [G01D]
2017/0033,428 DIRECTIONAL COUPLER Jun 21, 16 Feb 02, 17 [H03H, H01P]
2017/0025,219 MULTILAYER COIL COMPONENT Jul 19, 16 Jan 26, 17 [H01F]
2017/0025,226 COMPOSITE ELECTRONIC DEVICE Jul 20, 16 Jan 26, 17 [C04B, H01G, H01F]
2017/0025,296 GAS PURGE APPARATUS, LOAD PORT APPARATUS, INSTALLATION STAND FOR PURGING CONTAINER, AND GAS PURGE METHOD Mar 31, 16 Jan 26, 17 [B08B, H01L]
2017/0025,297 GAS PURGE UNIT Mar 31, 16 Jan 26, 17 [B08B, H01L, B05B]
2017/0025,298 GAS PURGE APPARATUS, LOAD PORT APPARATUS, INSTALLATION STAND FOR PURGING CONTAINER, AND GAS PURGE METHOD Mar 31, 16 Jan 26, 17 [B08B, H01L]
2017/0025,299 GAS PURGE UNIT, LOAD PORT APPARATUS, AND INSTALLATION STAND FOR PURGING CONTAINER May 27, 16 Jan 26, 17 [B08B, H01L]
2017/0025,324 THIN FILM CAPACITOR AND SEMICONDUCTOR DEVICE Jul 22, 16 Jan 26, 17 [H01G, H01L]
2017/0025,713 GAS DETECTION MATERIAL, GAS DETECTION TAPE AND LITHIUM ION SECONDARY BATTERY Jul 02, 15 Jan 26, 17 [B01J, G01N, H01M]
2017/0025,758 ANTENNA DEVICE AND COIL COMPONENT USED THEREIN Jun 14, 16 Jan 26, 17 [H01Q, H04B]
2017/0026,207 MICROWAVE RECEIVER AND MAGNETORESISTIVE DEVICE Jul 20, 16 Jan 26, 17 [H04L, H04B]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9567238 Negative electrode active material for lithium ion secondary battery, negative electrode for lithium ion secondary battery, and lithium ion secondary battery Apr 22, 15 Feb 14, 17 [C01G, H01M]
9567263 Dielectric composition and electronic component Oct 13, 15 Feb 14, 17 [H01B, C04B]
9570222 Vector inductor having multiple mutually coupled metalization layers providing high quality factor Jul 31, 13 Feb 14, 17 [H03H, H01G, H01F, H01L]
9570229 Power feeding coil unit and wireless power transmission device Nov 20, 14 Feb 14, 17 [B60L, H01F]
9570744 Lithium ion secondary battery Jul 25, 13 Feb 14, 17 [H01M]
9570921 Power feeding coil unit and wireless power transmission device Nov 20, 14 Feb 14, 17 [H01F, H02J]
9564179 Rectifying component for magnetic disk device Apr 04, 16 Feb 07, 17 [G11B]
9564270 Thin film capacitor Dec 19, 14 Feb 07, 17 [H01G]
9564641 Active material, electrode, lithium ion secondary battery, and method for manufacturing active material Mar 30, 12 Feb 07, 17 [H01M]
9564803 Control circuit and switching power supply unit Mar 04, 16 Feb 07, 17 [H02M]
9564819 Switching power supply circuit Mar 26, 15 Feb 07, 17 [H02M]
D778451 Conductive seal of a biomedical signal recorder Nov 11, 14 Feb 07, 17 [2402]
9557191 Rotating field sensor and angle determination method using the same Oct 07, 14 Jan 31, 17 [G01D]
9558882 Power feeding coil unit and wireless power transmission device Nov 20, 14 Jan 31, 17 [B60L, H01F, H02J]
9559352 Active material, electrode using same, and lithium ion secondary battery Mar 27, 13 Jan 31, 17 [H01M]

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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]
2015/0249,205 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]
2015/0136,216 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]
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]
2014/0203,901 REACTOR AND ELECTRICAL DEVICE ABAN Aug 27, 12 Jul 24, 14 [H01F]
8692414 Wireless power feeder and wireless power transmission system Withdrawn Apr 07, 11 Apr 08, 14 [H01F]
2014/0084,754 THIN FILM PIEZOELECTRIC DEVICE ABAN Sep 21, 12 Mar 27, 14 [H01L]
2014/0070,891 HIGH FREQUENCY AMPLIFIER ABAN Sep 20, 12 Mar 13, 14 [H03F]
2014/0020,738 SOLAR CELL, AND PROCESS FOR PRODUCING SOLAR CELL ABAN Mar 28, 12 Jan 23, 14 [H01L]
2013/0336,018 CONVERTER ABAN Jun 11, 13 Dec 19, 13 [H02M]

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