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 1520 5
 
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 469 2
 
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 431 103
 
 
H01G CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE 395 3
 
 
C04B LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS 184 5
 
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 174 31
 
 
H01M PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 142 47
 
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 112 65
 
 
H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS 104 33
 
 
H03H IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS 101 13
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Top Patents (by citation)

Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2018/0005,648 METHOD OF MANUFACTURING PERPENDICULAR MAGNETIC RECORDING HEAD Jun 29, 16 Jan 04, 18 [C23C, G11B]
2018/0005,654 HEAD ASSEMBLY AND MAGNETIC DISK DEVICE Aug 31, 17 Jan 04, 18 [G11B]
2018/0006,553 Impedance Circuit for a Charge Pump Arrangement and Charge Pump Arrangement Jan 20, 15 Jan 04, 18 [H04R, H02M]
2017/0370,747 ANGLE SENSOR AND ANGLE SENSOR SYSTEM Jun 12, 17 Dec 28, 17 [G01D]
2017/0372,827 COIL DEVICE Jun 21, 17 Dec 28, 17 [H01Q, H01F]
2017/0372,829 MULTILAYER COIL COMPONENT Jun 08, 17 Dec 28, 17 [H01F]
2017/0372,840 DIELECTRIC COMPOSITION AND ELECTRONIC COMPONENT Jun 26, 17 Dec 28, 17 [C04B, H01G]
2017/0373,009 ELECTRONIC COMPONENT Jun 26, 17 Dec 28, 17 [H01G, H01L]
2017/0364,039 SENSOR Nov 25, 15 Dec 21, 17 [G04B, G04G, G01N, G01L]
2017/0365,385 SOFT MAGNETIC METAL POWDER, SOFT MAGNETIC METAL FIRED BODY, AND COIL TYPE ELECTRONIC DEVICE Jun 09, 17 Dec 21, 17 [H01F]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9861344 Ovulation day estimation apparatus, ovulation day estimation method and storage medium in which ovulation day estimation program is recorded Sep 11, 14 Jan 09, 18 [A61B]
9862646 Dielectric composition and electronic component Sep 28, 16 Jan 09, 18 [C04B, H01G, C01G, C01F, H01L]
9865386 Coil component and circuit board having the same Dec 30, 16 Jan 09, 18 [H01F]
9865397 Multilayer electronic component Sep 14, 16 Jan 09, 18 [H01G]
9866058 Power feeding device, power receiving device, and wireless power transmission device Mar 04, 14 Jan 09, 18 [H01F, H02J]
9859602 Non-reciprocal circuit device and communication apparatus using the same Feb 19, 16 Jan 02, 18 [H01P]
9859799 Switching power supply unit Jan 23, 17 Jan 02, 18 [H02M]
9850559 Permanent magnet and variable magnetic flux motor Apr 08, 15 Dec 26, 17 [H01F, C22C, H02K]
9852751 Thin film magnetic head, head gimbals assembly, head arm assembly, and magnetic disk unit with improved air bearing surface Mar 14, 16 Dec 26, 17 [G11B]
9852755 Thin film magnetic head, head gimbals assembly, head arm assembly, and magnetic disk unit Apr 28, 16 Dec 26, 17 [G11B]
9852839 Coil component and manufacturing method thereof May 22, 15 Dec 26, 17 [H01F]
9854350 Microphone having increased rear volume, and method for production thereof Feb 18, 15 Dec 26, 17 [H04R, B81C, B81B]
9854360 MEMS microphone and method of operating a MEMS microphone May 07, 14 Dec 26, 17 [H04R, H03K]

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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]
2015/0333,330 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]
2015/0157,278 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]
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]

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