Eka Nobel AB

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
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 731
 
  
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF475
 
  
 
C25B ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR 431
 
  
 
B01D SEPARATION 2132
 
  
 
A61K PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES 1254
 
  
 
B01F MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING 141
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 1108
 
  
 
B21C MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL120
 
  
 
C01F COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS 120
 
  
 
C01G COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F 138

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5643414 Silica sols in papermakingJun 27, 94Jul 01, 97[D21H]
5607552 Aqueous suspensions of colloidal particles, preparation and use of the suspensionsFeb 13, 95Mar 04, 97[D21H]
5603805 Silica sols and use of the solsFeb 03, 95Feb 18, 97[D21H]
5552519 Rosin ester derivative as surfactantsMay 16, 95Sep 03, 96[C09J, B01F, C08L]
5547542 Process for purification and recycle of solutionsFeb 02, 94Aug 20, 96[D21C]
5545389 Process for the production of chlorine dioxideSep 12, 94Aug 13, 96[C01B]
5512135 Process for the production of paperJan 03, 94Apr 30, 96[D21H]
5502218 Process for the production of ketene dimersSep 15, 94Mar 26, 96[C07D]
5496440 Process for the manufacture of paperJan 03, 94Mar 05, 96[D21H]
5474938 Method of analysis hydrogen peroxideJan 10, 94Dec 12, 95[G01N]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6398908 Process for acid bleaching of lignocellulose-containing pulp with a magnesium compoundExpiredNov 22, 96Jun 04, 02[D21C]
6333426 Chiral adsorbents and preparation thereof as well as compounds on which the absorbents are based and preparation of the compoundsExpiredSep 28, 99Dec 25, 01[C07C]
6224944 Method of protecting a surfaceExpiredOct 27, 94May 01, 01[B05D, E01C]
6074529 Method for reducing the content of organic solvent in cellulose-reactive hydrophobing agentsExpiredFeb 23, 98Jun 13, 00[D21H]
6007678 Process for delignification of lignocellulose-containing pulp with an organic peracid or salts thereofExpiredFeb 19, 98Dec 28, 99[D21C]
5846898 Production of hydrogen peroxideExpiredApr 24, 97Dec 08, 98[B01J]
5792313 Method for evaporating process wastewaterExpiredJun 10, 96Aug 11, 98[C23F, B01D]
5785812 Process for treating oxygen delignified pulp using an organic peracid or salt, complexing agent and peroxide bleach sequenceExpiredMay 17, 95Jul 28, 98[D21C]
5776347 Method for reducing the content of organic solvent in cellulose-reactive hydrophobing agentsExpiredJul 07, 95Jul 07, 98[B01D]
5658429 Process for bleaching of lignocellulose-containing pulp using a chelating agent prior to a peroxide-ozone-peroxide sequenceExpiredSep 16, 94Aug 19, 97[D21C]
5627224 Aqueous compositions for sizing of paperExpiredJan 06, 95May 06, 97[C08K]
5547603 Silicate compositionExpiredMay 13, 94Aug 20, 96[C01B, C11D]
5510003 Method of sizing and aqueous sizing dispersionExpiredJul 20, 94Apr 23, 96[D21H]
5437791 Method for purifying process water from pulp manufactureExpiredFeb 02, 94Aug 01, 95[C02F, B01D]
5415668 Diacylated dipercarboxylic acid as bleaching agentExpiredNov 06, 92May 16, 95[D06L, C11D]
5399774 Process for the production of ketene dimersExpiredFeb 18, 94Mar 21, 95[C07C]
5395543 Freeflowing alkaline detergent, and agents for the preparation thereofExpiredMay 27, 94Mar 07, 95[C11D]
5374335 Sized paper, process for producing same and use thereofExpiredNov 01, 93Dec 20, 94[D21H]
5355838 Method for removing parasitesExpiredSep 28, 93Oct 18, 94[A01K]
5354479 Method for purifying process water or wastewater containing wood resinExpiredApr 30, 93Oct 11, 94[C02F]

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