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 1570 5
 
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 401 2
 
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 387 109
 
 
H01G CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE 354 3
 
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 177 28
 
 
C04B LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS 161 5
 
 
H01M PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 136 37
 
 
H03H IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS 113 12
 
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 101 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
2016/0343,504 ELECTRONIC COMPONENT Apr 29, 16 Nov 24, 16 [H01G]
2016/0336,865 RESONANT INVERTER AND ISOLATED RESONANT POWER SUPPLY DEVICE Mar 28, 16 Nov 17, 16 [H02M]
2016/0329,148 TRANSFORMER AND LEAKAGE TRANSFORMER Jul 19, 16 Nov 10, 16 [H01F]
2016/0329,151 MULTILAYER CERAMIC ELECTRONIC COMPONENT Dec 19, 14 Nov 10, 16 [H01G]
2016/0329,152 DIELECTRIC FILM AND DIELECTRIC ELEMENT Apr 21, 16 Nov 10, 16 [H01G]
2016/0322,706 ANTENNA DEVICE Apr 14, 16 Nov 03, 16 [H01Q, H01F, G06K]
2016/0322,857 COIL, NON-CONTACT POWER RECEIVING APPARATUS, AND PORTABLE ELECTRONIC DEVICE Apr 29, 16 Nov 03, 16 [H01F, H02J]
2016/0322,937 MAGNETORESISTIVE EFFECT OSCILLATOR Apr 14, 16 Nov 03, 16 [H01F, H03B]
2016/0323,019 ANTENNA DEVICE Apr 14, 16 Nov 03, 16 [H01Q, H04B]
2016/0307,675 R-T-B BASED SINTERED MAGNET Apr 15, 16 Oct 20, 16 [H01F]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9,509,211 Bridgeless power factor improvement converter Sep 29, 14 Nov 29, 16 [H02M]
D773058 Conductive seal of a biomedical signal recorder with a radio function Nov 11, 14 Nov 29, 16 [2402]
9,502,056 Magnetoresistance element including a stack having a sidewall, and an insulating layer in contact with the sidewall Mar 28, 16 Nov 22, 16 [G11B]
9,503,035 High-frequency amplifier Dec 16, 14 Nov 22, 16 [H03F]
9,495,983 Magnetic head with microwave-generating element and ground line therefor Mar 25, 13 Nov 15, 16 [G11B]
9,496,088 Electronic component and method of manufacturing electronic component Oct 27, 15 Nov 15, 16 [H01G, H05K]
9,497,837 Electrostatic protection device Sep 13, 12 Nov 15, 16 [H01T, H05F, H05K]
9,487,445 Ceramic composition Mar 24, 14 Nov 08, 16 [H01B, C04B, C01G, H01L]
9,489,968 Thermally-assisted magnetic recording head Jan 29, 15 Nov 08, 16 [G11B]
9,489,972 Light source unit, heat-assisted magnetic recording head using the same, and light source for light source unit Mar 13, 15 Nov 08, 16 [G11B, G01J]
9,490,053 R-T-B based permanent magnet Feb 12, 14 Nov 08, 16 [H01F, C22C]
9,490,717 Switching power supply circuit Mar 26, 15 Nov 08, 16 [H02M]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
9,224,706 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]
2014/0233,361 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]
8,692,414 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]
2013/0316,490 SOLAR CELL AND SOLAR CELL PRODUCTION METHOD ABAN Dec 28, 11 Nov 28, 13 [H01L]

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