Liaisons Electroniques-Mecaniques LEM SA

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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 18141
 
  
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 975
 
  
 
1004 OTHER MEASURING INSTRUMENTS, APPARATUS AND DEVICES630
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 2204
 
  
 
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
 
  
 
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
8358122 Current sensor with laminated magnetic coreDec 17, 08Jan 22, 13[G01R]
8339133 Thin film fluxgate sensorDec 12, 08Dec 25, 12[G01R]
8324883 Rogowski current sensorJun 18, 08Dec 04, 12[G01R]
D656850 Current sensorOct 29, 10Apr 03, 12[1004]
D656426 Current sensorOct 29, 10Mar 27, 12[1004]
8138877 Magnetic circuit with wound magnetic coreFeb 23, 10Mar 20, 12[H01F]
8022802 Sensor for high voltage environmentJun 19, 09Sep 20, 11[H02M, H01F]
7977934 High bandwidth open-loop current sensorFeb 22, 08Jul 12, 11[G01R]
7969140 Magnetic field sensor and electrical current sensor therewithJul 07, 09Jun 28, 11[G01R]
7965162 Current sensorJul 06, 05Jun 21, 11[H01F]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2008/0303,512 Isolating TransformerAbandonedOct 21, 05Dec 11, 08[G01R, H01F]
7388363 Detector circuit to be used for measuring currentExpiredNov 26, 04Jun 17, 08[G01R]
2008/0094,068 Kelvin Connector Including Temperature SensorAbandonedNov 02, 05Apr 24, 08[G01K, H01M, G01R]
6769166 Method of making an electrical current sensorExpiredFeb 14, 00Aug 03, 04[G01R, H05K, B44C]
6040688 Electrical current supply device with incorporated electrical current sensorExpiredDec 10, 98Mar 21, 00[H03H]
5709353 Winding device for forming an electric coil on a magnetic circuit with an air-gapExpiredAug 02, 96Jan 20, 98[H01F]
D367013 Electrical current sensorExpiredApr 13, 95Feb 13, 96[]
D353547 Electrical current sensorExpiredAug 09, 93Dec 20, 94[]
5146156 Current intensity transformer device for measuring a variable electric currentExpiredApr 09, 90Sep 08, 92[G01R]
5004974 Electric current sensing deviceExpiredSep 11, 89Apr 02, 91[G01R]
4947108 Electric current sensing deviceExpiredOct 14, 88Aug 07, 90[G01R]
4939448 Electric current sensing device of the magnetic field compensationtypeExpiredOct 14, 88Jul 03, 90[G01R]
4939449 Electric current sensing device of the magnetic field compensation typeExpiredJun 29, 89Jul 03, 90[G01R, H01F]

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