U.S. FILTER WASTEWATER GROUP, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 1133
 
  
 
D01D MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES, OR RIBBONS126
 
  
 
F26B DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM 129

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7223340 Hollow fibre restraining systemFeb 11, 05May 29, 07[B01D]
5566469 Drying apparatus with rotatable housingJul 18, 95Oct 22, 96[F26B]
5277851 Process of making a porous hollow fiber membraneSep 04, 92Jan 11, 94[D01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7384565 Method for chlorite removalExpiredOct 11, 05Jun 10, 08[]
2007/0034,569 Backwash and cleaning methodAbandonedSep 22, 04Feb 15, 07[B01D]
2005/0218,073 Method of cleaning membranesAbandonedMar 04, 05Oct 06, 05[B01D]
2004/0178,154 Scouring methodAbandonedMar 19, 04Sep 16, 04[B01D]
2004/0084,369 Scouring methodAbandonedSep 30, 03May 06, 04[B01D]
2003/0226,797 Fibre membrane arrangementAbandonedApr 23, 03Dec 11, 03[B01D]
2003/0178,365 Scouring methodAbandonedFeb 18, 03Sep 25, 03[B01D]
2002/0148,767 Membrane filtration manifold systemAbandonedOct 18, 01Oct 17, 02[B01D]
5679239 Process and apparatus for generating bromineExpiredOct 08, 96Oct 21, 97[C25B]
5599450 Anaerobic upflow batch reactorExpiredNov 20, 95Feb 04, 97[C02F]
D335526 Valve housingExpiredMar 29, 90May 11, 93[]
D334614 End manifold for a filter cartridgeExpiredMar 29, 90Apr 06, 93[]
D331619 End manifold for a filter cartridgeExpiredMar 29, 90Dec 08, 92[]
5024762 Concentration of solids in a suspensionExpiredJan 05, 90Jun 18, 91[B01D]
D311947 Filter cartridge for clarifying, sterilizing or concentrating fluid feedstockExpiredMar 28, 88Nov 06, 90[]
4939180 Process of producing a composite membraneExpiredJul 25, 89Jul 03, 90[C08D]
4931186 Concentration of solids in a suspensionExpiredOct 27, 86Jun 05, 90[B01D]
4876012 Hollow fibre filter cartridge and headerExpiredMay 06, 88Oct 24, 89[F28F]
4866099 MembraneExpiredMar 10, 87Sep 12, 89[C08J]
4767539 Cleaning of hollow fiber filters utilized in lumenal gas flowExpiredJun 03, 87Aug 30, 88[B01D]

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