TDK CORPORATION

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Technologies

Intl Class Technology # of Patents/ App Rank in Class
 
 
G11B INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER 1764 5
 
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 357 96
 
 
H01G CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE 325 3
 
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 293 2
 
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 187 29
 
 
C04B LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS 142 5
 
 
H01M PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 114 42
 
 
H03H IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS 95 10
 
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 86 63
 
 
H05K PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 76 61
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Top Patents (by citation)

Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2014/0252,869 POWER FEEDING DEVICE, POWER RECEIVING DEVICE, AND WIRELESS POWER TRANSMISSION DEVICE Mar 04, 14 Sep 11, 14 [H01F, H02J]
2014/0254,333 POLARIZATION CONVERTER INCLUDING A JAGGED DIAGONAL LINE IN PLANE ORTHOGONAL TO PROPAGATION DIRECTION OF ELECTROMAGNETIC WAVE Mar 08, 13 Sep 11, 14 [G11B, H01P]
2014/0247,100 R-T-B SINTERED MAGNET AND METHOD FOR PRODUCTION THEREOF, AND ROTARY MACHINE Oct 11, 12 Sep 04, 14 [H01F]
2014/0240,070 BOBBIN AND COIL COMPONENT Jan 23, 14 Aug 28, 14 [H01F]
2014/0240,896 DIELECTRIC CERAMIC COMPOSITION AND AN ELECTRONIC DEVICE THEREOF Feb 24, 14 Aug 28, 14 [C04B, H01G]
2014/0241,136 THERMALLY-ASSISTED MAGNETIC RECORDING HEAD USING NEAR-FIELD LIGHT Feb 22, 13 Aug 28, 14 [G11B]
2014/0241,138 MAGNETIC HEAD COMPRISING RECORDING PART, READING PART, HEATER FOR EXPANSION OF THE RECORDING PART, AND HEATER FOR EXPANSION OF THE READING PART Feb 22, 13 Aug 28, 14 [G11B]
2014/0242,728 METHOD OF ETCHING A MAGNESIUM OXIDE FILM Feb 26, 13 Aug 28, 14 [H01L]
2014/0242,838 TERMINAL BLOCK AND ELECTRONIC DEVICE COMPRISING SAME Jan 23, 14 Aug 28, 14 [H01R]
2014/0233,361 THERMALLY-ASSISTED MAGNETIC RECORDING HEAD AND METHOD OF MANUFACTURING THE SAME Feb 21, 13 Aug 21, 14 [G11B]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8,829,729 Wireless power feeder, wireless power receiver, and wireless power transmission system May 18, 11 Sep 09, 14 [H01F, H02J]
8,829,730 Wireless power feeder and wireless power transmission system Jul 21, 11 Sep 09, 14 [H04B, H02J]
8,830,700 DC-DC converter and method for controlling DC-DC converter Nov 16, 12 Sep 09, 14 [H02M, H02J]
8,830,701 DC-DC converter Nov 27, 12 Sep 09, 14 [H02M, H02J]
8,830,803 Optical drive device Aug 10, 10 Sep 09, 14 [G11B]
8,821,763 Active material and method of manufacturing active material Sep 28, 09 Sep 02, 14 [H01B, H01M]
8,822,837 Wiring board, electronic component embedded substrate, method of manufacturing wiring board, and method of manufacturing electronic component embedded substrate Dec 05, 11 Sep 02, 14 [H05K]
8,823,216 Signal transmission device, filter, and inter-substrate communication device Aug 31, 11 Sep 02, 14 [H01F]
8,823,478 Rare earth sintered magnet, method for producing same, motor and automobile Mar 28, 11 Sep 02, 14 [H01F]
8,815,011 Magnetic garnet single crystal and optical element using same as well as method of producing single crystal Aug 27, 10 Aug 26, 14 [G02F, C30B]
8,816,213 Terminal structure, printed wiring board, module substrate, and electronic device Jul 22, 11 Aug 26, 14 [H01B, H01L, H05K]
8,817,417 Perpendicular magnetic write head and magnetic recording device Dec 26, 12 Aug 26, 14 [G11B]
8,817,418 Magnetic head for perpendicular magnetic recording having a write shield Aug 15, 13 Aug 26, 14 [G11B]
8,817,490 DC-DC converter Dec 21, 12 Aug 26, 14 [H02M, H02J]
8,817,581 Thermally-assisted magnetic recording head using near-field light Feb 22, 13 Aug 26, 14 [G11B]
8,810,338 Signal transmission device, filter, and inter-substrate communication device Aug 30, 11 Aug 19, 14 [H01P]
8,811,127 Magnetic head comprising recording part, reading part, heater for expansion of the recording part, and heater for expansion of the reading part Feb 22, 13 Aug 19, 14 [G11B]
8,811,140 Recordable optical disc, recording device, and recording method Jul 01, 10 Aug 19, 14 [G11B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Filing Date Issue/Pub Date Intl Class
8,692,414 Wireless power feeder and wireless power transmission system Apr 07, 11 Apr 08, 14 [H01F]
2013/0070,364 THIN FILM MAGNETIC HEAD AND MANUFACTURING METHOD THEREOF Sep 15, 11 Mar 21, 13 [G11B]
2012/0313,743 LAMINATED ELECTRONIC COMPONENT EQUIPPED WITH INDUCTOR Sep 07, 11 Dec 13, 12 [H01F]
2012/0250,123 APPARATUS AND METHOD FOR EVALUATING HOLOGRAM IMAGE RECORDING MEDIUM Jan 30, 12 Oct 04, 12 [G03H]
2012/0250,189 MAGNETIC HEAD INCLUDING SIDE SHIELD LAYERS ON BOTH SIDES OF A MR ELEMENT Mar 29, 11 Oct 04, 12 [G11B]
2012/0250,216 SEMICONDUCTOR CERAMIC AND A MULTILAYER SEMICONDUCTOR CERAMIC CAPACITOR Mar 27, 12 Oct 04, 12 [H01B, H01G]
2012/0228,683 SPIN DEVICE, AND MAGNETIC SENSOR AND SPIN FET USING THE SAME Mar 09, 12 Sep 13, 12 [H01L]
2012/0086,993 PHOTOPOLYMER MEDIUM FOR COLOR HOLOGRAM IMAGE RECORDING AND COLOR HOLOGRAM IMAGE RECORDING METHOD Sep 06, 11 Apr 12, 12 [G03H]
2012/0075,768 DIELECTRIC CERAMIC COMPOSITION AND MANUFACTURING METHOD THEREOF, AND CERAMIC ELECTRONIC DEVICE Sep 29, 11 Mar 29, 12 [C04B, H01G]
2012/0067,999 TAPE REEL AND INFORMATION RECORDING MEDIUM Sep 19, 11 Mar 22, 12 [G11B, B65H]
2012/0069,615 BRIDGELESS POWER FACTOR CORRECTION CONVERTER Sep 07, 11 Mar 22, 12 [H02M]
2011/0317,328 CERAMIC ELECTRONIC COMPONENT AND METHOD FOR MANUFACTURING THE SAME Jun 23, 11 Dec 29, 11 [H01C, H01G]
2011/0280,116 OPTICAL RECORDING MEDIUM AND OPTICAL RECORDING METHOD May 11, 11 Nov 17, 11 [G11B]
2011/0262,632 Magnetoresistive Effect Element, Thin-Film Magnetic Head, Method for Manufacturing Magnetoresistive Effect Element, and Method for Manufacturing Thin-Film Magnetic Head Mar 07, 11 Oct 27, 11 [B05D]
2011/0235,491 OPTICAL RECORDING MEDIUM AND OPTICAL RECORDING METHOD Mar 24, 11 Sep 29, 11 [G11B, B32B]
2011/0216,432 MAGNETIC HEAD COMPRISING TWO MAGNETIC FIELD SENSING PART Mar 05, 10 Sep 08, 11 [G11B]
2011/0204,744 ROTOR CORE AND ELECTRIC MOTOR Feb 16, 11 Aug 25, 11 [H02K]
2011/0205,882 SERIES OF OPTICAL RECORDING MEDIA Feb 22, 11 Aug 25, 11 [G11B]
2011/0198,115 ELECTRONIC COMPONENT BUILT-IN MODULE AND METHOD OF MANUFACTURING THE SAME Feb 11, 11 Aug 18, 11 [H05K]
2011/0195,178 PRODUCTION METHOD OF DIELECTRIC CERAMIC COMPOSITION AND PRODUCTION METHOD OF ELECTRONIC DEVICE Jan 31, 11 Aug 11, 11 [C04B, B05D]

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