KEMIRA KEMI AB

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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 451
 
  
 
B01D SEPARATION 1133
 
  
 
B05D PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL 186
 
  
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF178
 
  
 
C01G COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F 138
 
  
 
C07K PEPTIDES 1135
 
  
 
C09K MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR194
 
  
 
C12N MICRO-ORGANISMS OR ENZYMES; COMPOSITIONS THEREOF 1166
 
  
 
E21B EARTH OR ROCK DRILLING 195

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8338341 Process for the production of a granule of a coated oxidizing compound such granule and uses of the granuleOct 15, 08Dec 25, 12[C09K, B05D, E21B, B32B]
8092772 Use of a nozzle for manufacturing sodium percarbonateOct 09, 08Jan 10, 12[C01B]
5968229 Purification of metal containing solutionsSep 03, 97Oct 19, 99[C01G]
5904856 Process for the preparation of aluminum salt solutionsJan 24, 96May 18, 99[C02F]
5895755 DNA molecules encoding PDGF molecules having protease resistant basic cleavage sitesSep 09, 94Apr 20, 99[C12N, C07K]
5888404 Method for treating waste water sludgeAug 18, 97Mar 30, 99[C02F]
5720882 Treatment method for waste water sludge comprising phoshorous, heavy metals and at least one metalMay 31, 96Feb 24, 98[B01D]
5674402 Method for the treatment of water treatment sludgeMay 17, 96Oct 07, 97[C02F]
5662826 Process for the preparation of a coagulating chemical comprising dissolving a solid zeolite in a solution of trivalent metal saltJan 10, 95Sep 02, 97[C02F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2010/0170,778 PROCESS FOR THE PRODUCTION OF POLYALUMINIUM SALTSAbandonedJun 05, 08Jul 08, 10[B01J]
2010/0147,766 SEPARATION PROCESSAbandonedJan 15, 08Jun 17, 10[C02F]
7166227 Method of treating digested sludgeExpiredApr 22, 04Jan 23, 07[C02F]
6852297 Method of treating residual acidExpiredApr 04, 03Feb 08, 05[D21C]
6746568 Treatment of filtrates from peroxide bleaching of pulpExpiredSep 15, 00Jun 08, 04[D21C]
6652756 Method of purifying sewageExpiredAug 09, 01Nov 25, 03[C02F]
6436181 Sizing composition and a method of sizingExpiredOct 13, 00Aug 20, 02[C09D, D21H, C08L]
6306256 Retention agentExpiredJan 04, 00Oct 23, 01[D21H]
6290812 Method for treating process water in connection with pulp bleachingExpiredAug 31, 00Sep 18, 01[D21C]
6217768 Method for treating sludge from wastewater treatmentExpiredSep 14, 99Apr 17, 01[C01B, C02F]
6010630 Method for recovering at least one metal from an acidified waste water sludgeExpiredJun 10, 96Jan 04, 00[B01D]
5670021 Process for production of paperExpiredOct 31, 94Sep 23, 97[D21H]
5632901 Process for the elimination of heavy metalsExpiredFeb 16, 95May 27, 97[C02F]
5182094 Process for the preparation of polyaluminum compoundsExpiredFeb 13, 90Jan 26, 93[C01F]

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