Hirotec Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING 452
 
  
 
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 192

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0066,074 SPOT WELDING METHOD FOR A THIN STEEL PLATE AND A SPOT WELDING JOINTNov 21, 16Mar 09, 17[B23K]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8146251 Method of manufacturing catalytic convertersMar 17, 05Apr 03, 12[B21D]
8065902 Hemming apparatusNov 18, 08Nov 29, 11[B21D]
8033155 Press die set for forming flange and flange forming methodJul 30, 08Oct 11, 11[B21D]
6295858 Hemming apparatusAug 02, 99Oct 02, 01[B21D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2013/0269,408 METAL PIPE, AND METHOD AND DEVICE FOR PROCESSING THE SAMEAbandonedDec 20, 10Oct 17, 13[B21D]
7575408 Work conveying method and conveying apparatus employing the conveying methodExpiredDec 28, 06Aug 18, 09[B65G, B64F, B65B]
2008/0314,111 HEMMING APPARATUSAbandonedJun 03, 08Dec 25, 08[B21D]
7451785 Flexible tubeExpiredDec 25, 03Nov 18, 08[F16L]
7434443 Compound press-forming apparatus and compound press-forming methodExpiredJul 30, 03Oct 14, 08[B21J]
7390049 Vehicle doorExpiredJul 21, 05Jun 24, 08[B60J]
2008/0072,428 Method and system for manufacturing vehicle lid bodyAbandonedSep 15, 06Mar 27, 08[B23P, B21D]
7111894 Automobile door structureExpiredMay 25, 04Sep 26, 06[B60J]
6378348 Hemming process and hemming apparatusExpiredAug 04, 00Apr 30, 02[B21D]
5796615 Correcting method of automobile's door frame and means thereofExpiredMay 08, 96Aug 18, 98[B23Q, G06F]
5424505 Spot welding machineExpiredJan 31, 94Jun 13, 95[B23K]
5342161 Holder changerExpiredOct 30, 92Aug 30, 94[B25J, B21D]
5277687 Press tool interchanging apparatusExpiredOct 27, 92Jan 11, 94[B23Q, B21J, B30B]
4989831 Coupling deviceExpiredJun 08, 90Feb 05, 91[F16L]
4967999 Flow passage coupling unitExpiredNov 28, 89Nov 06, 90[F16L]
4962881 Flow passage coupling unitExpiredApr 03, 90Oct 16, 90[F16L]

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