DAI-ICHI HIGH FREQUENCY CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
H05B ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR 295
 
 
 
A61F FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS 1129
 
 
 
B21K MAKING FORGED OR PRESSED PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS, WHEELS 121
 
 
 
B23K SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM 179
 
 
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM1147
 
 
 
C22C ALLOYS 158
 
 
 
F22B METHODS OF STEAM GENERATION; STEAM BOILERS 120
 
 
 
F22G SUPERHEATING OF STEAM 16
 
 
 
F24F AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING 135
 
 
 
F26B DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM 131

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8,214,053 Body heating deviceAug 29, 06Jul 03, 12[A61N, A61F]
8,042,498 Superheated steam generatorDec 13, 06Oct 25, 11[F22G, H05B, F28F, G21D, F24F]
7,807,273 Alloy-coated boiler part and method of welding self-fluxing alloy-coated boiler partMar 24, 05Oct 05, 10[B23K, B32B, F22B, C22C]
7,513,061 Sludge dehydrating processor for converting sludge including organic substance into resources of low water contentMay 26, 06Apr 07, 09[F26B]
7,297,908 Removing method of tubeApr 07, 05Nov 20, 07[H05B]
6,778,057 Inductor for heating inner-circumference of holeOct 09, 02Aug 17, 04[H01F]
5,713,130 Partially thick-walled elongated metallic member and methods of making and connecting the sameDec 28, 94Feb 03, 98[B21K]
5,397,876 High frequency bolt heater having induction heating coilJan 06, 94Mar 14, 95[H05B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2010/0300,379 BOILER WATERWALL PANELABANApr 18, 07Dec 02, 10[F22B]
7,169,480 Clad pipeExpiredFeb 01, 05Jan 30, 07[B32B]
5,123,989 Resin-bonding methodExpiredJun 11, 90Jun 23, 92[B32B]
5,068,491 Bus bar for power supply with coolant flow passagesExpiredJul 05, 90Nov 26, 91[H02G]
4,923,730 Anti-fouling surface structure, anti-fouling covering material and method of planting ribbons for producing anti-fouling surface structure and covering materialExpiredAug 02, 88May 08, 90[B32B]
4,604,813 Apparatus for dimensional inspection of a pipe spool, or for making or cutting and finishing at its both endsExpiredFeb 20, 85Aug 12, 86[A61B]
4,479,372 Method of manufacturing metallic bent pipeExpiredAug 12, 83Oct 30, 84[B21D]
4,442,331 Method and apparatus of induction heating a metallic elongated material having different thickness sectionsExpiredJan 20, 82Apr 10, 84[H05B]
4,412,442 Method for bending a metal pipeExpiredSep 17, 80Nov 01, 83[B21D]

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