CYNARA COMPANY, THE

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 2132

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5679133 Gas separations utilizing glassy polymer membranes at sub-ambient temperaturesAug 18, 94Oct 21, 97[B01D]
5352272 Gas separations utilizing glassy polymer membranes at sub-ambient temperaturesAug 13, 92Oct 04, 94[B01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5837032 Gas separations utilizing glassy polymer membranes at sub-ambient temperaturesExpiredFeb 10, 95Nov 17, 98[B01D]
5650479 Interfacially polymerized polyester filmsExpiredJun 06, 95Jul 22, 97[C08G]
5209848 Xylylene based polyether membranes for gas separationExpiredAug 22, 91May 11, 93[B01D]
5192478 Method of forming tubesheet for hollow fibersExpiredJan 15, 92Mar 09, 93[B32B]
5178649 Poly(arylene ether ketimine) gas separation membranesExpiredDec 21, 89Jan 12, 93[B01D]
5156656 Semi-permeable membranes derived from reactive oligomersExpiredSep 13, 91Oct 20, 92[B01D]
5124430 Arylene carbonate cyanoaryl ether copolymerExpiredAug 28, 90Jun 23, 92[C08G]
5096584 Spiral-wound membrane separation device with feed and permeate/sweep fluid flow controlExpiredSep 19, 90Mar 17, 92[B01D]
5049259 Membrane process for drying liquid hydrocarbonsExpiredJan 25, 89Sep 17, 91[C10G]
5034025 Membrane process for removing water vapor from gasExpiredDec 01, 89Jul 23, 91[B01D]
5034126 Counter current dual-flow spiral wound dual-pipe membrane separationExpiredJun 07, 90Jul 23, 91[B01D]
5026823 Novel alicyclic polyimides and a process for making the sameExpiredSep 12, 89Jun 25, 91[C08G]
5011637 Preparing cellulose ester membranes for gas separationExpiredJan 23, 89Apr 30, 91[B29C, D01F]
4988371 Novel alicyclic polyimide gas separation membranesExpiredSep 12, 89Jan 29, 91[B01D]
4895660 Water-soluble aromatic polyamides and polyureasExpiredApr 05, 89Jan 23, 90[B01D]
4842910 Assembly of water wet hollow fibers and a tubesheet derived from a diglycidyl ether of a dihydroxy benzeneExpiredApr 22, 88Jun 27, 89[B29C]
4828585 Surface modified gas separation membranesExpiredJan 11, 88May 09, 89[B01D]
4824916 Water-insoluble, crosslinked, sulfonated aromatic polyamideExpiredJul 14, 86Apr 25, 89[C08G]
4659343 Process for separating CO.sub.2 from other gasesExpiredSep 09, 85Apr 21, 87[B01D]
4430807 Process for drying water-wet membranesExpiredMay 17, 82Feb 14, 84[F26B, B01D]

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