TDK CORPORATION

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Technologies

Intl Class Technology # of Patents/ App Rank in Class
 
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 58 5
 
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 40 104
 
 
H01M PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 38 42
 
 
G11B INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER 27 16
 
 
H01G CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE 25 6
 
 
H05K PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 21 46
 
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 15 60
 
 
H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY 15 37
 
 
B05D PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL 14 42
 
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 10 49
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Top Patents (by citation)

Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2014/0283,649 R-T-B BASED SINTERED MAGNET Oct 04, 12 Sep 25, 14 [H01F]
2014/0285,919 THERMALLY-ASSISTED MAGNETIC RECORDING HEAD Mar 25, 13 Sep 25, 14 [G11B]
2014/0286,147 PLASMON GENERATOR HAVING FLARE SHAPED SECTION Mar 25, 13 Sep 25, 14 [G11B, G21K]
2014/0286,815 R-T-B BASED ALLOY STRIP, AND R-T-B BASED SINTERED MAGNET AND METHOD FOR PRODUCING SAME Oct 11, 12 Sep 25, 14 [H01F]
2014/0286,816 R-T-B BASED SINTERED MAGNET AND PRODUCTION METHOD FOR SAME, AND ROTARY MACHINE Oct 11, 12 Sep 25, 14 [H01F]
2014/0265,723 PIEZOELECTRIC ELEMENT, PIEZOELECTRIC ACTUATOR, PIEZOELECTRIC SENSOR, HARD DISK DRIVE, AND INKJET PRINTER DEVICE Mar 14, 13 Sep 18, 14 [B41J, H01L, G01L]
2014/0265,724 PIEZOELECTRIC ELEMENT, PIEZOELECTRIC ACTUATOR, PIEZOELECTRIC SENSOR, HARD DISK DRIVE, AND INKJET PRINTER DEVICE Mar 14, 13 Sep 18, 14 [B41J, H01L, G01L]
2014/0266,547 ELECTRONIC COMPONENT AND MANUFACTURING METHOD THEREOF Mar 06, 14 Sep 18, 14 [H01F]
2014/0268,405 CPP-TYPE MAGNETORESISTANCE EFFECT ELEMENT AND MAGNETIC DISK DEVICE Mar 15, 13 Sep 18, 14 [G11B]
2014/0268,424 MANUFACTURING METHOD OF MAGNET HEAD ABLE TO REDUCE ELECTRODE FILM FOR PLATING Mar 18, 13 Sep 18, 14 [G11B]
2014/0269,233 THERMALLY ASSISTED RECORDING HEAD UTILIZING LASER LIGHT WITH LIMITED WAVELENGTH RANGE Mar 14, 13 Sep 18, 14 [G11B]
2014/0272,602 SOLID-STATE LITHIUM ION CONDUCTOR AND ELECTROCHEMICAL DEVICE Mar 18, 14 Sep 18, 14 [H01M]
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]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8,841,224 Dielectric ceramic composition and electronic device Feb 21, 13 Sep 23, 14 [C04B, H01G]
8,841,226 Dielectric ceramic composition Nov 15, 12 Sep 23, 14 [C04B]
8,834,738 Ferrite magnetic material Jul 02, 10 Sep 16, 14 [C04B, C01G, H01F]
8,835,001 Ferrite sintered magnet, motor, and method for producing the ferrite sintered magnet Mar 27, 12 Sep 16, 14 [B32B]
8,829,725 Wireless power feeder, wireless power receiver, and wireless power transmission system Mar 18, 11 Sep 09, 14 [H01F, H04B, H02J]
8,829,726 Wireless power feeder and wireless power transmission system Apr 05, 11 Sep 09, 14 [H01F]
8,829,727 Wireless power feeder, wireless power transmission system, and table and table lamp using the same Apr 28, 11 Sep 09, 14 [H01F, H05B, H02M, H02J]
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]

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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]
2012/0162,854 MULTILAYER CERAMIC CAPACITOR Dec 27, 11 Jun 28, 12 [H01G]
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]

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