ZENON ENVIRONMENTAL INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 8126
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 253
 
  
 
B01F MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING 141
 
  
 
B08B CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL 157

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6908547 Membrane module for gas transfer and membrane supported biofilm processSep 15, 03Jun 21, 05[B01F]
6645374 Membrane module for gas transfer and membrane supported biofilm processFeb 24, 03Nov 11, 03[C02F]
6558549 Membrane module for gas transfer and membrane supported biofilm processMar 07, 01May 06, 03[C02F]
6451201 Distributed on-line integrity testing for immersed membranesApr 25, 01Sep 17, 02[B01D]
6120689 High purity water using triple pass reverse osmosis (TPRO)Apr 08, 98Sep 19, 00[B01D]
6080316 High resistivity water productionMar 03, 97Jun 27, 00[B01D]
6045698 Method for cleaning a filtration installation of the type with immersed membranesJul 30, 98Apr 04, 00[B08B, B01D]
5997745 Method for producing high purity water using triple pass reverse osmosis (TPRO)Apr 08, 98Dec 07, 99[B01D]
5958243 Apparatus and method for membrane filtration with enhanced net fluxMar 03, 97Sep 28, 99[B01D]
5501798 Microfiltration enhanced reverse osmosis for water treatmentApr 06, 94Mar 26, 96[B01D]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7063788 Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranesExpiredFeb 26, 03Jun 20, 06[B01D]
7022236 Membrane bioreactor, process and aeratorExpiredSep 28, 04Apr 04, 06[C02F]
2006/0030,024 Start-up method for filtering membranes to remove glycerinAbandonedJul 21, 05Feb 09, 06[C02F]
2006/0008,865 Screening apparatus for water treatment with membranesAbandonedJun 29, 05Jan 12, 06[C12Q, B01D]
6964741 Apparatus for withdrawing permeate using an immersed vertical skein of hollow fiber membranesExpiredMar 03, 03Nov 15, 05[B01D]
2005/0194,315 Membrane batch filtration processAbandonedFeb 22, 05Sep 08, 05[B01D]
2005/0189,282 Tri-axial membrane filtration device and processAbandonedFeb 17, 05Sep 01, 05[B01D]
2005/0184,002 Method of potting hollow fiber membranesAbandonedJan 06, 05Aug 25, 05[B01D]
2005/0127,000 Inverted air box aerator and aeration method for immersed membranesAbandonedFeb 08, 05Jun 16, 05[B01F]
2005/0115,899 Membrane bioreactor having single header membrane moduleAbandonedOct 21, 04Jun 02, 05[B01D]
6878276 Methods of making stretched filtering membranes and modulesExpiredDec 09, 02Apr 12, 05[B01D]
2004/0222,158 Nanofiltration system for water softening with internally staged spiral wound modulesAbandonedMar 12, 04Nov 11, 04[B01D]
2004/0129,637 Multi-stage filtration and softening module and reduced scaling operationAbandonedOct 09, 03Jul 08, 04[B01D]
2004/0118,767 Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranesAbandonedSep 15, 03Jun 24, 04[B01D]
6702944 Multi-stage filtration and softening module and reduced scaling operationExpiredJun 29, 01Mar 09, 04[B01D]
2004/0007,527 Membrane filtration device and processAbandonedMay 19, 03Jan 15, 04[B01D]
2003/0098,275 Hollow fiber membrane and braided tubular support thereforAbandonedJan 04, 02May 29, 03[B01D]
6485645 Biological process for removing phosphorus involving a membrane filterExpiredApr 30, 02Nov 26, 02[C02F]
6361695 Shipboard wastewater treatment systemExpiredSep 30, 00Mar 26, 02[C02F]
6324898 Method and apparatus for testing the integrity of filtering membranesExpiredDec 21, 99Dec 04, 01[G01N]

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