SEITZ-FILTER-WERKE GMBH UND CO.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 2132

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5228991 Membrane filter module for filtering fluids in a cross-flowNov 20, 91Jul 20, 93[B01D]
5149430 Fluid distributing head for a membrane filter module for filtration of fluidsNov 20, 91Sep 22, 92[B01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6139724 Procedure and device for filtration of fluids using MF modulesExpiredFeb 23, 99Oct 31, 00[B01D]
5422057 Method of producing a filtration module for separating and filtering fluids in a cross flow processExpiredApr 30, 93Jun 06, 95[B29C]
5376274 Hydrophilic membrane and method for its productionExpiredMay 17, 93Dec 27, 94[B01D]
5290457 Filter element with regenerable bulk material filling and method for making sameExpiredNov 19, 92Mar 01, 94[B01D]
5269921 Filter cartridge or filter module consisting of flexible deep filter materialExpiredMay 05, 92Dec 14, 93[B01D]
5225080 Filtration module and device for separating and filtering fluids in a crossflow processExpiredSep 06, 91Jul 06, 93[B01D]
5223139 Filter material in the form of flexible leaves or sheets and a method of producing such materialExpiredApr 09, 90Jun 29, 93[B01D]
5169528 Filter elementExpiredDec 20, 90Dec 08, 92[B01D]
5139712 Method of producing microfiltration membranes from aromatic polyamidesExpiredJan 22, 91Aug 18, 92[B29C]
5122270 Filter cartridge or filter module consisting of flexible deep filter materialExpiredApr 09, 90Jun 16, 92[B01D]
5102541 Supporting tube construction for filter modulesExpiredFeb 13, 91Apr 07, 92[B01D]
5043068 Tubular filter element with axially yieldable sectionExpiredMay 24, 89Aug 27, 91[B01D]
5034125 Membrane filtering device for micro and ultra filtration of fluids by the crossflow methodExpiredMay 21, 90Jul 23, 91[G01D]
4983288 Filter element with membrane-type filter materialExpiredJun 02, 89Jan 08, 91[B01D]
4737286 Microfiltration membrane filterExpiredNov 15, 85Apr 12, 88[B01D]
4671873 Filter element with permanently applied sealing stripsExpiredDec 06, 84Jun 09, 87[B01D]
4627992 Process for the production of filter elements based on aromatic polyamideExpiredNov 21, 84Dec 09, 86[B05D]
4567009 Production of microfiltration membrane filterExpiredMay 31, 83Jan 28, 86[B29C]

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