WANHUA CHEMICAL (NINGBO) 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 5133
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 4105
 
  
 
C08G MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 4116
 
  
 
B01F MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING 240
 
  
 
C01D COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM 114
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 154
 
  
 
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

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9802848 Method for treating waste saline water produced in production process of diphenylmethane diisocyanate (MDI)Sep 17, 09Oct 31, 17[C02F, C01D]
9790314 Viscoelastic sound-absorbing polyurethane foam and preparation method thereofJan 27, 14Oct 17, 17[C08G]
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]
9399582 Catalyst for preparing phosgene and method for preparing phosgene using the sameFeb 11, 14Jul 26, 16[C01B, C07C, B01J]
9062154 Polycarbonate preparation methodNov 05, 12Jun 23, 15[C08G]
8759591 Method for intermittently producing 4,4′-diaminodicyclohexylmethane with a low amount of the trans-trans isomerJun 03, 11Jun 24, 14[C07C]
8333927 Hole jet reactor and a process for the preparation of an isocyanate using the reactorAug 21, 07Dec 18, 12[B01J, B01F]
8206652 Jet reactor with flow ducts and process for preparing isocyanates using itAug 21, 07Jun 26, 12[C07C, B01J]
8042988 Hole-jetting type mixer-reactorOct 16, 07Oct 25, 11[B01F]

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Expired/Abandoned/Withdrawn Patents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]

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