TOSHIBA TOKO METER SYSTEMS CO., LTD.

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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 8151
 
  
 
G01F MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME 257

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9354258 Current detection device and electricity meterDec 02, 11May 31, 16[G01R, H01F]
8433529 Watt-hour meterFeb 25, 09Apr 30, 13[G01R]
8219330 Gas appliance judgment apparatus and methodJun 02, 11Jul 10, 12[G01F]
7970557 Gas appliance judgment apparatus and methodJul 08, 08Jun 28, 11[G01F]
7919960 Electricity meter capable of minimizing the risk of data destruction from lightning or surgeNov 20, 08Apr 05, 11[G01R]
5554927 Electrical quantity measurement deviceMar 03, 95Sep 10, 96[G01R]
5497077 Power calculating deviceJul 21, 94Mar 05, 96[G01R]
5475303 Electronic watthour meterJan 06, 95Dec 12, 95[G01R]
5438258 Power multiplication circuit which reduces an offset voltage of a Hall element to zeroJul 30, 93Aug 01, 95[G01R]
5414349 Electronic watthour meterNov 20, 92May 09, 95[G01R]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
8217643 Current detector and wattmeter using the sameExpiredFeb 26, 09Jul 10, 12[G01R]
7987698 Gas leak detection apparatus and methodExpiredJul 08, 08Aug 02, 11[G01M]
7974794 Electric energy meterExpiredDec 06, 07Jul 05, 11[G01R]
6496783 Electric power calculation systemExpiredMar 03, 00Dec 17, 02[G01R]
6473699 Power arithmetic apparatusExpiredMar 08, 99Oct 29, 02[G01R]

Top Inventors for This Owner

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