CIRCE ACQUISITION CORP.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
C08G MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 2118

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6172180 Highly branched block copolymersAug 25, 98Jan 09, 01[C08G]
5700903 Block copolymersApr 18, 96Dec 23, 97[C08G]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5834583 Block copolymersExpiredDec 23, 97Nov 10, 98[C08F]
5798437 Thermoplastic block copolymersExpiredJul 29, 96Aug 25, 98[C08G]
5741334 Artificial pancreatic perfusion deviceExpiredOct 16, 96Apr 21, 98[A61F]
5712154 Dual fiber bioreactorExpiredJun 07, 95Jan 27, 98[C12M]
5700902 Block copolymersExpiredJul 27, 95Dec 23, 97[C08G]
5418061 Microporous polysulfone supports suitable for removal of low density lipoprotein-cholesterolExpiredJul 21, 93May 23, 95[B01D]
5298206 Method and apparatus for casting hollow fiber membranesExpiredDec 03, 92Mar 29, 94[D01D, B29C]
5151227 Process for continuous spinning of hollow-fiber membranes using a solvent mixture as a precipitation mediumExpiredMar 18, 91Sep 29, 92[B29C]
5116493 Artificial pancreatic perfusion device with reseedable matrixExpiredMar 25, 91May 26, 92[B01D]
5116494 Artificial pancreatic perfusion device with temperature sensitive matrixExpiredMar 25, 91May 26, 92[B01D]
5096585 Process for preparing protein non-adsorptive microporous polysulfone membranesExpiredJan 28, 91Mar 17, 92[B01D]
5002661 Artificial pancreatic perfusion deviceExpiredAug 25, 89Mar 26, 91[B01D]
4970034 Process for preparing isotropic microporous polysulfone membranesExpiredSep 23, 88Nov 13, 90[B29C]

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