WANHUA CHEMICAL GROUP CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C07C ACYCLIC OR CARBOCYCLIC COMPOUNDS 12126
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 8101
 
  
 
C08G MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 7113
 
  
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF475
 
  
 
B01D SEPARATION 1133
 
  
 
B01F MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING 141
 
  
 
C07D HETEROCYCLIC COMPOUNDS 1161
 
  
 
C09D COATING COMPOSITIONS, e.g. PAINTS, VARNISHES, LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR 191
 
  
 
F16L PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL169
 
  
 
H05B ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR 1110

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0164,424 Heater, Use Thereof And Method For Preparing Isocyanate Using HeaterJun 16, 14Jun 08, 17[F16L, C08G, H05B]
2015/0037,243 Process of Producing Chlorine Gas by Catalytic Oxidation of Hydrogen ChlorideMay 26, 12Feb 05, 15[C01B]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9845281 Method for preparing hydroxyethyl (meth) acrylateJul 29, 14Dec 19, 17[C08F, C07C]
9840462 Solvent refining method for isocyanate prepared by phosgene method and devices used in sameApr 11, 14Dec 12, 17[C07C, B01D]
9790314 Viscoelastic sound-absorbing polyurethane foam and preparation method thereofJan 27, 14Oct 17, 17[C08G]
9701624 Method for preparing biuret polyisocyanateApr 15, 14Jul 11, 17[C07C]
9683078 Method for preparing branched polycarbonate with continuous two-phase interface phosgene methodSep 09, 13Jun 20, 17[C08G]
9624162 Method for preparing 3-aminomethyl-3,5,5-trimethyl cyclohexylamineDec 07, 12Apr 18, 17[C07C]
9593089 Process for preparing TDI isocyanurateFeb 11, 14Mar 14, 17[C08G, C07D]
9580380 Method for preparing diamino-dicyclohexyl methaneNov 22, 13Feb 28, 17[C07C, B01J]
9518142 Process for preparing isocyanate homopolymers containing uretdione groupsMar 03, 14Dec 13, 16[C08G, C07F]
9399582 Catalyst for preparing phosgene and method for preparing phosgene using the sameFeb 11, 14Jul 26, 16[C01B, C07C, B01J]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2016/0207,876 CATALYST USED FOR RESOURCE UTILIZATION OF A FIXED BED ANILINE DISTILLATION RESIDUE AND METHOD FOR PREPARING SAID CATALYSTAbandonedMar 07, 14Jul 21, 16[C07C, B01J]
2013/0288,884 CATALYST FOR PREPARING CHLORINE BY OXIDATION OF HYDROGEN CHLORIDE AND PREPARATION THEREOFAbandonedJun 03, 11Oct 31, 13[B01J]

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