TOKYO YOGYO KABUSHIKI KAISHA

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B22D CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 643
 
  
 
C21C PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL 216
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 2204
 
  
 
B29C SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 1124
 
  
 
H01M PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 1153
 
  
 
1509 MACHINE TOOLS, ABRADING AND FOUNDING MACHINERY128

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7322496 Brick body for rotary nozzleJun 25, 04Jan 29, 08[C21C]
7290685 Nozzle plate for a sliding nozzle apparatusJun 15, 05Nov 06, 07[B22D]
D546849 Sliding nozzle plateNov 03, 05Jul 17, 07[1509]
6872344 Gas blowing plug and manufacturing method thereforJan 31, 03Mar 29, 05[B29C]
6568571 Exchangeable continuous casting nozzleDec 08, 00May 27, 03[B22D]
6382477 Apparatus for controlling amount of teeming molten metal and slide plate used for the sameMar 02, 01May 07, 02[B22D]
6026996 Brick body for rotary nozzle and rotary nozzle using sameSep 30, 97Feb 22, 00[B22D]
5945063 Bottom blown gas blowing apparatus for molten metal ladleFeb 24, 98Aug 31, 99[C21C]
5709807 Flow rate adjusting for rotary nozzle type molten metal pouring unitNov 07, 96Jan 20, 98[B22P]
D386568 Flow rate adjusting plate for a rotary nozzle type molten metal pouring unitNov 20, 95Nov 18, 97[2301]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6551550 Gas blowing plug and manufacturing method thereforExpiredAug 18, 00Apr 22, 03[C21C]
5975382 Continuous casting nozzle for casting molten steelExpiredJan 21, 98Nov 02, 99[B22D]
5849245 Well brick of vessel for molten metalExpiredMay 28, 97Dec 15, 98[C21B]
5841042 Brake lining material for heavy-load braking deviceExpiredApr 29, 96Nov 24, 98[B23F, C22C]
D371825 Flow rate adjusting plate for a rotary nozzle type molten metal pouring unitExpiredDec 19, 94Jul 16, 96[]
5360147 Sliding nozzle for molten steel receiving vesselExpiredApr 30, 93Nov 01, 94[B22D]
5360269 Immersion-type temperature measuring apparatus using thermocoupleExpiredNov 12, 93Nov 01, 94[G01K]
5346185 Vacuum-suction degassing apparatusExpiredJun 08, 93Sep 13, 94[C21C]
5329987 Molten metal pouring pipe for pressure-casting machineExpiredMay 17, 93Jul 19, 94[B22D]
5324487 Vacuum-suction degassing apparatusExpiredMay 10, 93Jun 28, 94[C21C]
5306472 Vacuum-suction degassing method and an apparatus thereforExpiredMay 10, 93Apr 26, 94[F27D]
5249717 Rotary nozzleExpiredJun 05, 92Oct 05, 93[B22D]
5167698 Vacuum-suction degassing method and an apparatus thereforExpiredApr 02, 91Dec 01, 92[C21C]
5100565 Valve of faucetExpiredMay 21, 91Mar 31, 92[F16K]
4998650 Rotary nozzle on a molten steel vesselExpiredJul 17, 89Mar 12, 91[B22D]
4991753 Door-type rotary nozzleExpiredMay 24, 89Feb 12, 91[B22D]
4978040 Rotary nozzlesExpiredMay 24, 89Dec 18, 90[B22D]
4735859 Magnesia aggregate for refractory article and method for manufacturing sameExpiredSep 04, 86Apr 05, 88[C04B]
4732304 Rotary nozzle systemExpiredNov 06, 86Mar 22, 88[B22D]
4595178 Leg for vacuum tank for refining molten steelExpiredDec 31, 84Jun 17, 86[C21C]

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