Hitachi Seiko, Ltd.

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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 192
 
 
 
G05B CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 1100
 
 
 
G06K RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS 1197
 
 
 
H05K PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 1155

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
D420686 Machining centerMar 12, 99Feb 15, 00[1509]
5349159 Consumable-electrode AC gas shield arc welding method and apparatus thereforMay 24, 93Sep 20, 94[B23K]
5315072 Printed wiring board having blind holesJan 27, 92May 24, 94[H05K]
5266878 CNC apparatus for controlling a plurality of machinesJan 23, 92Nov 30, 93[G05B]
5144679 Graphic data searching and storage methodFeb 04, 91Sep 01, 92[G06K]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6460755 Bump forming method and apparatus thereforExpiredMar 07, 97Oct 08, 02[B23K]
6388684 Method and apparatus for displaying a target region and an enlarged imageExpiredJun 25, 93May 14, 02[G06F]
6207927 Gas-shielded AC arc welding method and machine making use of consumable electrodeExpiredFeb 10, 99Mar 27, 01[B23K]
5888036 Drill bit and step feeding methodExpiredJul 23, 97Mar 30, 99[B23B]
5390446 Grinding method and grinding machineExpiredJun 18, 92Feb 21, 95[B24B]
5225660 Consumable-electrode AC gas shield arc welding method and apparatus thereforExpiredJul 23, 90Jul 06, 93[B23K]
5214991 Punching apparatusExpiredAug 15, 91Jun 01, 93[B26D, B26F]
5208761 Method for the diameter confirmation of drills in a PWB machineExpiredJan 07, 91May 04, 93[G01B]
5200906 Wire-cut electric discharge machining methodExpiredNov 21, 90Apr 06, 93[G06F, B23H]
5109973 Free flowing production systemExpiredJan 02, 90May 05, 92[B65G]
5108236 Low mass spindle and Z-axis unitExpiredOct 24, 90Apr 28, 92[B23Q]
5099520 Figure retrieval methodExpiredMar 20, 90Mar 24, 92[G06K]
5090284 Mechanisms for driving punch pins in punching apparatusExpiredDec 19, 89Feb 25, 92[B26D]
5086203 Wire electric discharge machining apparatusExpiredJun 01, 89Feb 04, 92[B23H]
5078558 Low mass spindle and Z-axis unitExpiredFeb 16, 90Jan 07, 92[B23Q]
5064985 Method for controlling withdrawal of electrode in electric-discharge machineExpiredDec 29, 89Nov 12, 91[B23H]
4991117 Figure data display method and systemExpiredDec 13, 88Feb 05, 91[G06F]
4983802 Drawing system in a wire-cut electrodischarge machineExpiredDec 14, 89Jan 08, 91[B23H]
4968923 Servo control systemExpiredDec 28, 89Nov 06, 90[G05B]
4876433 Inverter controlled-type power source for arc weldingExpiredJun 29, 88Oct 24, 89[B23K]

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