MEMBRANE PRODCUTS KIRYAT WEIZMANN LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 3131

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5265734 Silicon-derived solvent stable membranesDec 08, 92Nov 30, 93[B01D]
5205934 Silicone-derived solvent stable membranesAug 13, 92Apr 27, 93[B01D]
5151182 Polyphenylene oxide-derived membranes for separation in organic solventsAug 30, 91Sep 29, 92[B01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6077376 Process for producing a tubular membrane assemblyExpiredOct 22, 97Jun 20, 00[B65H, B01D]
5676832 Multi-stage membrane system and processExpiredNov 07, 96Oct 14, 97[B01D]
5057197 Process and apparatus for the removal of undesired components from aqueous feedstocksExpiredMay 08, 89Oct 15, 91[B01D]
5049282 Semipermeable composite membranesExpiredApr 11, 90Sep 17, 91[B01D]
5039421 Solvent stable membranesExpiredOct 02, 89Aug 13, 91[B01D]
5032282 Solvent-stable semipermeable composite membranesExpiredApr 11, 90Jul 16, 91[B01D]
5028337 Coated membranesExpiredApr 11, 90Jul 02, 91[B01D]
5024765 Composite membranes and processes using themExpiredOct 02, 89Jun 18, 91[B01D]
4833014 Composite membranes useful for the separation of organic compounds of low molecular weight from aqueous inorganic salts containing solutionsExpiredMay 23, 88May 23, 89[B32B]
4778596 Semipermeable encapsulated membranes, process for their manufacture and their useExpiredAug 18, 86Oct 18, 88[B01D]
4767645 Composite membranes useful for the separation of organic compounds of low molecular weight from aqueous inorganic salts containing solutionsExpiredApr 17, 87Aug 30, 88[B05D]
4761233 Novel membranes and process for making themExpiredMar 10, 87Aug 02, 88[C08J, B29C]
4477634 Modified acrylonitrile polymer containing semipermeable membranesExpiredMar 08, 82Oct 16, 84[C08F]

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