Kabushiki Kaisha Meidensha

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS 1077
 
  
 
G01L MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE 848
 
  
 
H01H ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES 886
 
  
 
G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR760
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 6441
 
  
 
H01G CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE 561
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 4103
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 2107
 
  
 
B66B ELEVATORS; ESCALATORS OR MOVING WALKWAYS 226
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 2204

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7812246 Thermoelectric effect device, energy direct conversion system, and energy conversion systemDec 05, 03Oct 12, 10[H01L]
7693641 Vehicle speed control systemApr 15, 05Apr 06, 10[B60K, B60T, G06F]
7504063 Method of producing molded green body and producing insert by baking the green bodyJul 07, 04Mar 17, 09[B28B]
7273133 Elevator hoisting machineJun 16, 05Sep 25, 07[B66B]
7214412 Magenta toner and method for producing sameOct 31, 02May 08, 07[C30B]
7041930 Bellows for use in vacuum capacitorDec 07, 04May 09, 06[H01G]
7042699 Vacuum variable capacitorMay 12, 05May 09, 06[H01G]
7029635 System for treating material containing noxious componentsMar 12, 02Apr 18, 06[H62D]
6975499 Vacuum variable capacitor with energization and heat shielding bellowsDec 21, 04Dec 13, 05[H01G]
6952102 Method and apparatus for monitoring vacuum degree of vacuum in vacuum interrupterFeb 07, 01Oct 04, 05[G01L]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2006/0016,469 Thermoelectric effect apparatus, energy direct conversion system , and energy conversion systemAbandonedDec 04, 03Jan 26, 06[H01L]
2003/0163,994 Generator set for vegetable oil and method of operating the sameAbandonedDec 19, 02Sep 04, 03[F02C]
6544478 QCM sensorExpiredJul 12, 99Apr 08, 03[G01N]
2002/0046,142 Inventory control system and methodAbandonedSep 19, 01Apr 18, 02[G06F]
5946208 Power converterExpiredSep 16, 98Aug 31, 99[H02M]
5852554 Power inverter having three or more parallel driven PWM-type power inverting unitsExpiredJun 12, 97Dec 22, 98[H02M]
5808449 Method and apparatus for detecting islanding operation of dispersed generatorExpiredMay 31, 96Sep 15, 98[H02P]
5771164 Power supply converter for suppressing higher harmonics to output a stable voltageExpiredJan 06, 97Jun 23, 98[H02M, G05F]
5729111 Inertia lowering control apparatus capable of suppressing axially torsional vibration occurring on flexible drive shaft of two-mass inertia resonant systemExpiredApr 03, 95Mar 17, 98[G05B]
5691763 Terminated cable portion inspection device for stripped terminal crimping machineExpiredSep 07, 95Nov 25, 97[H04N]
5668506 Temperature compensated crystal oscillatorExpiredMay 23, 96Sep 16, 97[H03B]
5623192 Apparatus for carrying out current control for variable speed driver and method for carrying out current control thereforExpiredMar 03, 94Apr 22, 97[H02P]
5594670 Apparatus for measuring circuit constant of induction motor with vector control system and method thereforExpiredAug 08, 94Jan 14, 97[G01R]
D376785 InverterExpiredJul 22, 94Dec 24, 96[]
5581452 Pulse width modulation inverter current detection methodExpiredOct 07, 93Dec 03, 96[H02M, H02P]
5548252 Digital temperature compensated crystal oscillatorExpiredDec 07, 94Aug 20, 96[H03L, H03B]
D372017 InverterExpiredMar 31, 95Jul 23, 96[]
5489412 Electrode materialExpiredApr 26, 94Feb 06, 96[H01B, C22F, H01H]
5477114 Method and system for estimating inertia of 2-mass system during speed controlExpiredNov 30, 93Dec 19, 95[H02P]
5463713 Synthesis of speech from textExpiredApr 21, 94Oct 31, 95[G10L]

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