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 1527 5
 
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 425 2
 
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 403 109
 
 
H01G CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE 373 3
 
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 175 26
 
 
C04B LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS 171 5
 
 
H01M PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 136 43
 
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 105 64
 
 
H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS 99 33
 
 
H03H IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS 91 13
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Top Patents (by citation)

Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0160,187 Laser Scanner Particle Counter and Imager Dec 08, 15 Jun 08, 17 [G01N]
2017/0162,311 ARCUATE MAGNET PIECE, PERMANENT MAGNET PIECE, PERMANENT MAGNET ASSEMBLY, PERMANENT MAGNET APPLICATION DEVICE, AND MOTOR Mar 27, 15 Jun 08, 17 [G01R, H01F, H02K]
2017/0162,316 COIL COMPONENT AND POWER SUPPLY CIRCUIT UNIT Nov 29, 16 Jun 08, 17 [H01F]
2017/0162,317 COIL COMPONENT, METHOD OF MAKING THE SAME, AND POWER SUPPLY CIRCUIT UNIT Nov 29, 16 Jun 08, 17 [H01F]
2017/0163,177 METHOD OF DRIVING A DRIVING APPARATUS Feb 16, 17 Jun 08, 17 [H02N, B06B]
2017/0163,231 CIRCUIT AND METHOD OF OPERATING A CIRCUIT May 08, 14 Jun 08, 17 [H03G, H03F, H04R]
2017/0154,720 COIL DEVICE Nov 29, 16 Jun 01, 17 [H01F]
2017/0155,033 PIEZOELECTRIC ELEMENT AND PIEZOELECTRIC ACTUATOR Nov 29, 16 Jun 01, 17 [G11B, H01L]
2017/0149,051 POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE, AND LITHIUM ION SECONDARY BATTERY Nov 10, 16 May 25, 17 [H01M]
2017/0150,261 MEMS MICROPHONE AND METHOD OF OPERATING A MEMS MICROPHONE May 07, 14 May 25, 17 [H04R, H03K]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9671812 Apparatus and methods for temperature compensation of variable capacitors Dec 15, 15 Jun 06, 17 [G05F]
9672973 Wireless power transmission device Jun 17, 14 Jun 06, 17 [H01F]
9673506 Antenna device and manufacturing method thereof May 15, 15 Jun 06, 17 [H01Q, H01F]
9673767 MEMS microphone and method of operating the MEMS microphone Apr 10, 12 Jun 06, 17 [H03G, H04R]
9673774 Apparatus and methods for high voltage variable capacitor arrays with body biasing resistors May 06, 15 Jun 06, 17 [H03H, H01G, H01L]
9666216 Magnetic recording device and magnetic recording method Jun 14, 16 May 30, 17 [G11B]
9666372 Dielectric ceramic composition and ceramic electronic device Mar 08, 16 May 30, 17 [C04B, H01G]
9667036 ESD protection component Dec 16, 14 May 30, 17 [H01T, H02H]
9658636 Apparatus and methods for variable capacitor arrays Nov 25, 15 May 23, 17 [H03B, H01L, G05F, H03K]
9659582 Method of manufacturing an electronic device Jan 25, 13 May 23, 17 [G11B]

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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]
2014/0370,290 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]

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