NIPPON ROTARY NOZZLE CO., LTD.

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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 247
 
  
 
C21C PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL 216

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]
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]
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]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7546937 Poured molten metal quantity control deviceExpiredDec 21, 04Jun 16, 09[C21C]
2008/0272,157 Sliding Nozzle Device and Pouring DeviceAbandonedMar 14, 05Nov 06, 08[B22D]
2007/0027,024 Filler for ladle sliding and opening/closing deviceAbandonedSep 09, 04Feb 01, 07[C04B]
2002/0128,144 Filler sand for a ladle tap hole valveAbandonedNov 20, 01Sep 12, 02[C04B, B32B]
6316106 Filler sand for a ladle tap hole valveExpiredJan 19, 99Nov 13, 01[C04B, B32B]
6051514 Sliding nozzle fillerExpiredApr 07, 98Apr 18, 00[C04B, B22D]
D371825 Flow rate adjusting plate for a rotary nozzle type molten metal pouring unitExpiredDec 19, 94Jul 16, 96[]
5249717 Rotary nozzleExpiredJun 05, 92Oct 05, 93[B22D]
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]
4732304 Rotary nozzle systemExpiredNov 06, 86Mar 22, 88[B22D]
4591080 Rotary nozzle system for metallurgical vesselsExpiredDec 13, 83May 27, 86[B22D]
4577785 Hinged rotary nozzleExpiredNov 02, 84Mar 25, 86[B22D]
4498611 Dual door type rotary nozzleExpiredMar 04, 82Feb 12, 85[B22D]
4294437 Slide closure for the pouring nozzle of a molten metal vesselExpiredOct 11, 79Oct 13, 81[C21C]

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