JIANGXI RARE EARTH AND RARE METALS TUNGSTEN GROUP CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B02C CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN 134
 
  
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF178
 
  
 
C01G COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F 138
 
  
 
C22B PRODUCTION OR REFINING OF METALS 127
 
  
 
F27D DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE 124
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 1205

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9464845 Combined furnace system for fire refining red impure copperMay 23, 12Oct 11, 16[C22B, F27B, F27D]
8980215 Method for preparing ultrafine tungsten carbide powderDec 30, 09Mar 17, 15[C23C, C01B]
8435467 Process for preparing ammonium metatungstateDec 30, 09May 07, 13[C01G]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
8584975 Ball milling process for preparing hard alloy mixtureExpiredDec 30, 09Nov 19, 13[B02C]
8557594 Method for determining chromium content in a tungsten matrix with added chromium or simultaneously added chromium and vanadiumExpiredDec 09, 09Oct 15, 13[G01N]

Top Inventors for This Owner

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