Eka Chemicals AB

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 4130
 
  
 
D21C PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR325
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 3444
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 253
 
  
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF178
 
  
 
C08K USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS 1101
 
  
 
C25B ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR 134
 
  
 
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
6100322 Process for the production of paperOct 02, 98Aug 08, 00[C08K]
5980717 Recovery process in a pulp millDec 29, 97Nov 09, 99[B01D]
5961803 Leaching processJul 09, 96Oct 05, 99[C25B, C02F, B01D, D21C]
5916447 Method for water treatmentOct 15, 97Jun 29, 99[C02F]
5876579 Electrodialysis treatmentApr 02, 97Mar 02, 99[B01D]
5842150 Method of determing the organic content in pulp and paper mill effulentsApr 11, 97Nov 24, 98[G01N, D21C]
5680320 Method of quantifying performance chemicals in pulp and paperMay 18, 95Oct 21, 97[G06F]
5680321 Method of quantifying the properties of paperMay 18, 95Oct 21, 97[G06F]
5643430 Electrodialysis treatmentFeb 03, 95Jul 01, 97[B01D]
5638284 Method of quantifying the wet strength of paperMay 18, 95Jun 10, 97[G06F]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7825240 Cross-linked polymers based on bis-silane, bis-thioether, bis-sulphoxide, bis-sulphone and butane-di-yl derivatives of polysaccharides and oligosaccharides, and their shaping as support materialsExpiredOct 29, 03Nov 02, 10[C07H, C08B]
7576034 Crosslinked three-dimensional polymer network, method for preparing same, support material comprising same and uses thereofExpiredSep 23, 02Aug 18, 09[B01J, B01D]
7067640 Cross-linked chiral compounds and methods of making thereofExpiredApr 03, 00Jun 27, 06[C07H]
6677446 Cross-linked polymers based on bis-silane, bis-thioether, bis-sulphoxide, bis-sulphone and butane-di-yl derivatives of polysaccharides an oligosaccharides, and their shaping as support materialsExpiredApr 20, 01Jan 13, 04[C08B]
6528642 Mono-and di-derivatives of cyclodextrins, synthesis thereof and purification and use thereof in supportExpiredAug 25, 99Mar 04, 03[C08B]
6514407 Chloro-, hydroxy- and alkoxysilane derivatives of polysaccharides or oligosaccharides, polymerizable and cross-linkable, their synthesis and their use as sources of novel support materialsExpiredMar 15, 01Feb 04, 03[C07H, B01D]
6346616 Chloro-, hydroxy- and alkoxysilane derivatives of polysaccharides or oligosaccharides, polymerizable and cross-linkable, their synthesis and their use as sources of novel support materialsExpiredSep 13, 99Feb 12, 02[C07H]
6342592 Chiral compounds, their synthesis and use as a supportExpiredMar 16, 98Jan 29, 02[C07H]
6277782 Chiral adsorbents and preparation thereof as well as compounds on which the adsorbents are based and preparation of these compoundsExpiredJun 26, 95Aug 21, 01[B01J]
6174383 Method at treatment of metalsExpiredJul 01, 98Jan 16, 01[C23G]
6113741 Process for the production of paperExpiredDec 04, 97Sep 05, 00[D21H]
6087457 Surface sizing of cellulose based productsExpiredMar 29, 96Jul 11, 00[C08F]
6083347 Absorbent material and production thereofExpiredMar 24, 97Jul 04, 00[D21H]
6042723 Mono- and di-derivatives of cyclodextrins, synthesis thereof and purification and use thereof in a supportExpiredAug 07, 98Mar 28, 00[B01D]
5961948 Method of producing hydrogen peroxideExpiredJun 24, 97Oct 05, 99[C01B]
5938894 Absorbent cellulosic material and production thereofExpiredMar 24, 97Aug 17, 99[D21H]
5925588 Production of hydrogen peroxideExpiredOct 28, 98Jul 20, 99[B01J]
5876562 Sizing dispersionsExpiredMay 28, 97Mar 02, 99[D21H]
5810939 Method at treatment of metalsExpiredNov 27, 96Sep 22, 98[C23G]
5808053 Modificaton of starchExpiredJan 17, 97Sep 15, 98[C07H, C08B]

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