STERLING CANADA, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B08B CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL 157
 
  
 
G03G ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY 180
 
  
 
G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES 183

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5698357 Toner and developer for developing electrostatic latent image, and image forming process using the sameAug 20, 96Dec 16, 97[G03G]
5263643 Thermally responsive relief valveDec 24, 92Nov 23, 93[G05D]
5222512 Sparger system for discharge of bulk material from hopper carsFeb 13, 92Jun 29, 93[B08B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4806215 Combined process for production of chlorine dioxide and sodium hydroxideExpiredJul 27, 88Feb 21, 89[C15B]
4802959 Electrosynthesis of persulfateExpiredJun 16, 87Feb 07, 89[C25B]
4780304 Acid introduction in chlorine dioxide productionExpiredFeb 09, 87Oct 25, 88[C01B]
4534952 Small scale generation of chlorine dioxide for water treatmentExpiredFeb 24, 84Aug 13, 85[C01B]
4421598 Bleaching procedure using chlorine dioxide and chlorine solutionsExpiredMar 22, 82Dec 20, 83[C01B, D21C]
4414193 Production of chlorine dioxide on a small scaleExpiredSep 16, 82Nov 08, 83[C01B]
4409066 Bleaching procedure using chlorine dioxide and chlorine solutionsExpiredMar 22, 82Oct 11, 83[C01B, D21C]
4406736 Method of bleaching pulp with an aqueous solution of chlorine dioxide and chlorine followed by a chlorine solutionExpiredAug 17, 81Sep 27, 83[C01B, D21C]
4393035 Chlorine dioxide production using mixed hydrochloric and sulfuric acid feedExpiredNov 02, 81Jul 12, 83[C01B]
4393036 Production of mixed sulfuric and hydrochloric acid feed and chlorine dioxide generation therewithExpiredNov 10, 81Jul 12, 83[C01B]
4366120 Small scale chlorine dioxide plantExpiredAug 27, 80Dec 28, 82[G05B, G05D, B01J]
4336228 Chlorine dioxide generatorExpiredSep 22, 80Jun 22, 82[B01J]
4325783 Bleaching procedure using chlorine dioxide and chlorine solutionsExpiredNov 27, 79Apr 20, 82[C01B, D21C]
4325934 Production of chlorine dioxide with conversion of by-product solid phase sodium acid sulphate to its neutral formExpiredSep 22, 80Apr 20, 82[C01B]
4299653 Method of bleaching pulp with an aqueous solution of chlorine dioxide and chlorine followed by a chlorine solutionExpiredNov 29, 79Nov 10, 81[C01B, D21C]
4292275 Modular chlorine dioxide generation systemsExpiredMay 22, 80Sep 29, 81[F28D, B01J]
4290998 Washing apparatus in chlorine dioxide productionExpiredDec 17, 79Sep 22, 81[B01J, B01D]
4276262 Chlorine dioxide generatorExpiredOct 02, 79Jun 30, 81[C01B, B01J, B01D]
4251224 Control system for chlorine dioxide plantsExpiredSep 13, 79Feb 17, 81[C01B, G06G]
4251502 Modular chlorine dioxide generation systemsExpiredJun 05, 79Feb 17, 81[C01B]

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