DAI-ICHI HIGH FREQUENCY CO., LTD.

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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]
7,169,480 Clad pipeFeb 01, 05Jan 30, 07[B32B]
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]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Filing Date Issue/Pub Date Intl Class
2010/0300,379 BOILER WATERWALL PANELApr 18, 07Dec 02, 10[F22B]
5,123,989 Resin-bonding methodJun 11, 90Jun 23, 92[B32B]
5,068,491 Bus bar for power supply with coolant flow passagesJul 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 materialAug 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 endsFeb 20, 85Aug 12, 86[A61B]
4,479,372 Method of manufacturing metallic bent pipeAug 12, 83Oct 30, 84[B21D]
4,442,331 Method and apparatus of induction heating a metallic elongated material having different thickness sectionsJan 20, 82Apr 10, 84[H05B]
4,412,442 Method for bending a metal pipeSep 17, 80Nov 01, 83[B21D]

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