Mitsubishi Electric Building Techno-Service 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 2157
 
  
 
B66B ELEVATORS; ESCALATORS OR MOVING WALKWAYS 127
 
  
 
G01L MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE 155
 
  
 
G08B SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS 193
 
  
 
H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS 186

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7658268 Control device without a speed sensor for controlling speed of a rotating machine driving an elevatorOct 28, 04Feb 09, 10[B66B]
7423401 AC rotary machine constant measuring apparatus for measuring constants of stationary AC rotary machineDec 28, 04Sep 09, 08[G01R]
7408322 Device for determining constant of rotating machineJun 06, 03Aug 05, 08[H02P]
6339375 Image monitoring apparatus and image monitoring methodJun 30, 00Jan 15, 02[G08B]
5933793 Outgoing harmonic level evaluatorJun 27, 97Aug 03, 99[G01R]
5731528 Rope tension measuring apparatus for use with an elevatorNov 15, 96Mar 24, 98[G01L]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7784590 Elevator operation control deviceExpiredMar 01, 06Aug 31, 10[B66B]
7500652 Hoist for elevatorExpiredDec 01, 04Mar 10, 09[B66D]

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