LGZ Landis & Gyr Zug AG

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 1158
 
  
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 183

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
RE31613 Measuring transformerAug 06, 82Jun 26, 84[G01R, H01F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5128855 Building automation system operating installation control and regulation arrangementExpiredMay 31, 89Jul 07, 92[G06F]
5057890 Hall elementExpiredNov 09, 90Oct 15, 91[H01L]
5046943 Air throttle control for a two-stage blower burnerExpiredMay 02, 88Sep 10, 91[F23N]
4987467 Integratable hall elementExpiredSep 30, 88Jan 22, 91[H01L]
4979149 Non-volatile memory device including a micro-mechanical storage elementExpiredOct 05, 89Dec 18, 90[G11C]
4977310 Programmable control or regulating deviceExpiredFeb 01, 89Dec 11, 90[G06F]
4970411 Arrangement for improving the longterm stability of a Hall elementExpiredApr 19, 89Nov 13, 90[H03K, G01R]
4967145 Active current transformerExpiredMar 03, 89Oct 30, 90[G01R]
4963827 Intermittently activated magnetic shield arrangement for reducing noise and offsets in solid state magnetic field sensorsExpiredAug 24, 89Oct 16, 90[G01R]
4963954 Arrangement for reducing piezoelectric effects in an electrical componentExpiredApr 19, 89Oct 16, 90[H01L]
4942310 Arrangement for the transformation of an electrical multiphase signal into a frequencyExpiredMar 17, 89Jul 17, 90[H03L, H03K]
4929993 Hall element device with depletion region protection barrierExpiredApr 25, 86May 29, 90[H01L]
4910570 Photo-detector for ultraviolet and process for its productionExpiredJun 16, 88Mar 20, 90[H01L]
4894610 Current-transformer arrangement for an electrostatic meterExpiredJun 12, 87Jan 16, 90[G01R]
4881027 Circuit arrangement comprising input circuits to find a power output sum for application in multi-phase electricity metersExpiredJul 28, 88Nov 14, 89[G01R]
4870260 Method and apparatus for validating valuable documentsExpiredAug 20, 86Sep 26, 89[G06F]
4864223 Measuring transformer to measure the current flowing in an electric conductorExpiredMay 17, 88Sep 05, 89[G01R]
4853620 Circuit arrangement comprising multiplier circuits to find the sum of electrical power outputs for application in multi-phase electricity metersExpiredJul 28, 88Aug 01, 89[G01R]
4844572 Light modulator including waveguide with alternating semiconductor sectionsExpiredJul 26, 88Jul 04, 89[H01L, G02B]
4843310 Electricity meter with arrangement for monitoring core saturation incidentsExpiredMay 09, 86Jun 27, 89[G08B, G01R, H02H]

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