INSTITUTE OF TECHNOLOGY PRECISION ELECTRICAL DISCHARGE WORK'S

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B23H WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL 318
 
  
 
B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING 254
 
  
 
B21J FORGING; HAMMERING; PRESSING; RIVETING; FORGE FURNACES 218
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM2155
 
  
 
B26D CUTTING; DETAILS COMMON TO MACHINES FOR SEVERING, e.g. BY CUTTING, PERFORATING, PUNCHING, STAMPING-OUT 136
 
  
 
B26F PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING 115
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 1446

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7143617 PressFeb 13, 03Dec 05, 06[B21D]
6852189 Method and apparatus for manufacturing laminatesApr 14, 03Feb 08, 05[B32B]
6810704 Press forming machineMar 07, 02Nov 02, 04[B21J]
6682625 Method and apparatus for manufacturing profiles and laminatesMar 05, 99Jan 27, 04[B32B]
6253117 Vacuum processing apparatus and semiconductor manufacturing line using the sameOct 30, 98Jun 26, 01[G06F]
6003359 Progressive deep-drawing machineApr 22, 99Dec 21, 99[B21D]
5951884 Electric discharge machining method and apparatusFeb 14, 97Sep 14, 99[B23H]
5728286 Method of manufacturing extrusion die for extruding honeycomb structural bodyAug 08, 96Mar 17, 98[B23H]
5271140 Index-feed machining systemMay 08, 91Dec 21, 93[B26D, B26F]
5158659 Electrode clamp deviceJul 03, 91Oct 27, 92[B23H]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7007529 Pressing machineExpiredMay 12, 03Mar 07, 06[B21J]
6792788 PressurizerExpiredDec 03, 01Sep 21, 04[B21J, B30B]
6679164 Press machineExpiredMay 23, 02Jan 20, 04[B30B]
6519831 Progressive processing deviceExpiredOct 10, 01Feb 18, 03[B23P]
2003/0005,802 Die set with guide posts and guide bushes to be slidably fitted togetherAbandonedJun 20, 02Jan 09, 03[B26D, B26F]
6436543 HIGH-GLOSS, HEAT-RESISTANT PAINT COMPOSITION; A METHOD FOR MANUFACTURING THE HIGH-GLOSS, HEAT-RESISTANT PAINT; A METHOD FOR APPLYING THE HIGH-GLOSS, HEAT-RESISTANT PAINT; AND A HIGH-GLOSS, HEAT-RESISTANT PAINT FILMExpiredNov 08, 00Aug 20, 02[B05D, C09D, C08L, B32B]
5678446 Index-feed machining systemExpiredOct 02, 95Oct 21, 97[B21J, B21D]
5669128 Index-feed machining systemExpiredSep 26, 95Sep 23, 97[B21J]
5613396 Index-feed machining systemExpiredJul 25, 95Mar 25, 97[B21J]
5526668 Index-feed machining systemExpiredFeb 21, 95Jun 18, 96[B21D]
5473926 Index-feed machining systemExpiredOct 16, 92Dec 12, 95[B21J]
5330409 Cassette changing apparatus for index-feeding machining systemsExpiredDec 16, 92Jul 19, 94[B23Q]
5111017 Power supply circuit for discharge machiningExpiredAug 07, 90May 05, 92[B23H]
5008509 Production method of honeycomb die-forming electrical discharge machining electrodes and production method of honeycomb diesExpiredMar 15, 90Apr 16, 91[B24B, B29C, B23H]
4952790 Electrical discharge machining control circuitExpiredDec 09, 87Aug 28, 90[B23H]
4940872 Electric discharge machining circuitExpiredJan 13, 88Jul 10, 90[B23H]
4830598 Dies for extruding honeycomb structureExpiredAug 11, 87May 16, 89[B29C]
4820146 Super hard alloy dies for extruding honeycomb structuresExpiredAug 11, 87Apr 11, 89[B29C]
4808787 Wire-cut electrical discharge machining equipmentExpiredNov 17, 87Feb 28, 89[B23H]
4800248 Electrical discharge machining apparatus with discharge current controlExpiredDec 21, 87Jan 24, 89[B23H]

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