NORAM ENGINEERING AND CONSTRUCTORS LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 1144
 
  
 
B01D SEPARATION 6128
 
  
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF673
 
  
 
F28F DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION 448
 
  
 
B03C MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS 219
 
  
 
D21C PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR226
 
  
 
D21H PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR 236
 
  
 
F28D HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT 243
 
  
 
A61K PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES 1254
 
  
 
B01F MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING 141

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2015/0252,531 PROCESS FOR MAKING PARTLY-HYDROLYZED CELLULOSE USING COMPRESSED CELLULOSIC MATERIALSSep 20, 12Sep 10, 15[D21H, D21F, D21D]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9567707 Purification process for partly-hydrolyzed celluloseAug 21, 12Feb 14, 17[A61K, C08B, D21H, C08L, D21C]
7985341 Circular clarifier apparatus and methodJul 23, 07Jul 26, 11[C02F, B01D]
7758758 Method for treating acidic waters using recycled acidic and basic sludgesFeb 28, 07Jul 20, 10[C02F]
7419605 Method for treating metal-contaminated water and soilJan 19, 06Sep 02, 08[C02F]
7353982 Diffusion bonding for metallic membrane joining with metallic moduleNov 25, 03Apr 08, 08[B23K]
7258788 Circular clarifier apparatus and methodMar 12, 04Aug 21, 07[C02F]
7141231 Internally circulating fluidized bed membrane reactor systemAug 11, 03Nov 28, 06[C01B]
7033507 Method for removing metals from acid mine drainageNov 15, 02Apr 25, 06[C02F]
7029202 Method for treating metal-contaminated water and soilJul 22, 02Apr 18, 06[B09C]
6468429 Apparatus and method for controlling liquor circulation flow in long vertical shaft bioreactorsMay 11, 00Oct 22, 02[C02F]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2014/0170,328 ELECTROLESS PLATING OF RUTHENIUM AND RUTHENIUM-PLATED PRODUCTSAbandonedDec 13, 13Jun 19, 14[C23C]
8246779 Maintenance of sulfur concentration in Kraft pulp processesExpiredSep 24, 10Aug 21, 12[D21C]
7572308 Mechanical system for installing and removing contacting devices from a chemical process towerExpiredSep 12, 05Aug 11, 09[B01D]
6537439 Method and apparatus for recovering a reaction product produced at a surfaceExpiredJan 29, 01Mar 25, 03[C25C]
5890531 Apparatus for the self-cleaning of process tubesExpiredSep 16, 97Apr 06, 99[F28G]
5470481 Method and apparatus for recovering wash water from pulp and paper mill effluentExpiredOct 13, 93Nov 28, 95[B01D]
5135611 Method and apparatus for combined spray drying and gas cleaningExpiredMay 25, 90Aug 04, 92[B01D]
5075097 Method and apparatus for sulfuric acid concentrationExpiredOct 11, 90Dec 24, 91[C01B]
5044431 Tube layout for heat exchangerExpiredAug 21, 90Sep 03, 91[F28D]
5014740 Distributor for packed towerExpiredMay 21, 90May 14, 91[B05B]

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