Kabushiki Kaisha Yaskawa Denki Seisakusho

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR 258
 
  
 
B41F PRINTING MACHINES OR PRESSES 143
 
  
 
G05B CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 1100
 
  
 
H02N ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR130

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5359490 Method of controlling moving element of magnetic levitation and transport systemOct 22, 93Oct 25, 94[H02N]
5263413 Method and system for synchronously phase-controlling printing roll driving system for corrugated board printing pressMar 19, 92Nov 23, 93[B41F]
5222199 Robot control methodApr 15, 91Jun 22, 93[G05B]
5128536 Abnormality processing circuit for an encoderFeb 26, 91Jul 07, 92[G01D]
5117105 Absolute encoderMar 07, 91May 26, 92[G01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5248923 Manipulator using plane pulse motorExpiredMay 15, 91Sep 28, 93[G05B, B25J]
5222198 Control method and apparatus for a robot having multi-rotating axesExpiredApr 20, 92Jun 22, 93[G05B, G06F]
5187418 Method of controlling articulated robotExpiredSep 23, 91Feb 16, 93[G05B, B25J]
5173592 Method and apparatus for multi-layer weldingExpiredOct 17, 90Dec 22, 92[B23K]
5162716 Tracking control method between two servo systemsExpiredMar 25, 91Nov 10, 92[G05B]
5150029 Method and apparatus for controlling the magnetic flux of an induction motorExpiredNov 17, 89Sep 22, 92[H02P]
5134354 Servo motor control apparatusExpiredDec 03, 90Jul 28, 92[G05B]
5124620 Control method for robotsExpiredAug 21, 90Jun 23, 92[G06F]
5119287 Optimum tracking control method for periodic target valueExpiredApr 28, 89Jun 02, 92[G05B, G06F]
5083352 Tool changing device for robotExpiredJul 01, 91Jan 28, 92[B23Q]
5066848 Automatic copying method for a welding torch in an arc welding robotExpiredApr 25, 90Nov 19, 91[B23K]
5065061 EIEC tromagnetic actuator for valve stemExpiredFeb 16, 90Nov 12, 91[H02K]
5049793 Method of controlling V/F inverter for machines having mechanical braking systemsExpiredMay 02, 89Sep 17, 91[H02P]
5040124 Positional information detecting method in arc weldingExpiredJun 27, 90Aug 13, 91[B23K, G06F]
5040125 Positional information detecting method in arc weldingExpiredJun 27, 90Aug 13, 91[B23K, G06F]
5038292 Positional information detecting method in arc weldingExpiredJun 27, 90Aug 06, 91[B23K, G06F]
5020444 Method of and apparatus for controlling magnetic levitationExpiredMay 02, 90Jun 04, 91[B60L]
4998830 Device for supporting arm driving shafts of industrial robotExpiredOct 03, 89Mar 12, 91[F16C, B25J]
4988945 Optical and magnetic encoder for serially transmitting absolute position signals with an auxiliary power supplyExpiredMar 09, 88Jan 29, 91[G01P, G01D]
4950849 Contact detector for movable objectsExpiredJul 19, 89Aug 21, 90[H01H]

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