Eka Chemicals Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF1465
 
  
 
C25B ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR 233
 
  
 
A23L FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT 163
 
  
 
B01D SEPARATION 1133
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 154
 
  
 
D21C PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR127
 
  
 
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 137

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7070710 Chemical composition and methodSep 07, 99Jul 04, 06[C01B]
6790427 Process for producing chlorine dioxideJun 25, 01Sep 14, 04[C01B]
6387344 Chemical composition and methodNov 14, 00May 14, 02[C01B]
5908532 Method of converting chlorine dioxide present in a gaseous stream from a pulp bleach plant by irradiation to chlorineOct 30, 96Jun 01, 99[D21C]
5895638 Method of producing chlorine dioxideMar 20, 97Apr 20, 99[C01B]
5858322 Process of producing chlorine dioxideFeb 28, 97Jan 12, 99[C01B]
5641530 Method of disinfectionNov 27, 95Jun 24, 97[A23L]
5624545 Production of polysulphide by electrolysis of white liquor containing sulphideDec 18, 95Apr 29, 97[C02F]
5603805 Silica sols and use of the solsFeb 03, 95Feb 18, 97[D21H]
5565182 Process of producing chlorine dioxideJun 07, 95Oct 15, 96[C01B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6576213 Method of producing chlorine dioxideExpiredJun 30, 95Jun 10, 03[C01B]
2002/0114,757 Chemical composition and methodAbandonedFeb 21, 02Aug 22, 02[C01B]
5091166 Process for the production of chlorine dioxideExpiredSep 04, 90Feb 25, 92[C01B, D21C]
5091167 Process for the production of chlorine dioxideExpiredSep 04, 90Feb 25, 92[C01B]
4980025 Papermaking processExpiredJul 17, 89Dec 25, 90[D21H]
4388150 Papermaking and products made therebyExpiredFeb 26, 81Jun 14, 83[D21H]

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