DEUTSCHE BANK TRUST COMPANY AMERICAS CORPORATE TRUST & AGENCY SERVICES

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
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 1281
 
  
 
H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF 1101

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6498316 Plasma torch and method for underwater cuttingOct 20, 00Dec 24, 02[B23K]
6369350 Plasma-arc torch system with pilot re-attach circuit and methodMay 30, 01Apr 09, 02[B23K]
RE37608 Plasma torch electronic pulsing circuitDec 08, 94Mar 26, 02[B23K]
6350960 Parts-in-place safety reset circuit and method for contact start plasma-arc torchNov 28, 00Feb 26, 02[B23K]
6337460 Plasma arc torch and method for cutting a workpieceJan 29, 01Jan 08, 02[B23K]
6163008 Plasma arc torchDec 09, 99Dec 19, 00[B23K]
5990443 Plasma torch pilot arc circuitMar 12, 98Nov 23, 99[B23K]
5961855 Low voltage electrical based parts-in-place (PIP) system for contact start torchJan 28, 98Oct 05, 99[B23K]
5825642 Power supply apparatusMay 27, 97Oct 20, 98[H02M]
5530220 Plasma torch arc transfer circuitApr 11, 94Jun 25, 96[B23K]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
D314086 CaseExpiredJun 22, 87Jan 29, 91[]
4954683 Plasma arc gougerExpiredMay 26, 89Sep 04, 90[B23K]
D302097 Plasma arc torch with angled headExpiredFeb 03, 86Jul 11, 89[]
4782210 Ridged electrodeExpiredJun 26, 87Nov 01, 88[B23K]
4748312 Plasma-arc torch with gas cooled blow-out electrodeExpiredApr 10, 86May 31, 88[B23K]
4691094 Plasma-arc torch with sliding gas valve interlockExpiredMay 20, 86Sep 01, 87[B23K]
4663512 Plasma-arc torch interlock with pressure sensingExpiredNov 04, 85May 05, 87[B23K]
4663515 Plasma-arc torch interlock with flow sensingExpiredNov 04, 85May 05, 87[B23K]
4585921 Torch operation interlock deviceExpiredJul 20, 83Apr 29, 86[B23K]
4581516 Plasma torch with a common gas source for the plasma and for the secondary gas flowsExpiredJul 20, 83Apr 08, 86[B23K]
4558201 Plasma-arc torch with gas cooled blow-out electrodeExpiredDec 10, 84Dec 10, 85[B23K]

Top Inventors for This Owner

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