Optatech Corporation

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7175779 Thermotropic main-chain liquid crystalline polymers and method of increasing the melt processibility of polyester-based liquid crystalline polymersExpiredMay 03, 00Feb 13, 07[C09K]
7030285 Alkylation processExpiredJan 29, 01Apr 18, 06[C07C]
2004/0176,548 Heat and oil resistant thermoplastic elastomerAbandonedDec 24, 03Sep 09, 04[C08F]
6602959 Preparation of polyolefin based thermoplastic elastomersExpiredOct 23, 01Aug 05, 03[C08F]
6566570 Process for preparing cyclic monomersExpiredAug 04, 00May 20, 03[C07C]
6472576 Process for preparing 2,6-dimethylnaphthaleneExpiredJun 01, 01Oct 29, 02[C07C]
6333086 Multilayered polymer films and process for the preparation thereofExpiredJan 29, 96Dec 25, 01[B29D]
6294706 Method for preparing norbornene and substituted derivatives of norborneneExpiredOct 29, 98Sep 25, 01[C07C]
6262177 Process for preparing polyacrylate/polyolefin blendsExpiredDec 14, 99Jul 17, 01[C08F, C08L]
6221962 Liquid crystal polymer blends, process for the preparation thereof and products manufactured from the blendsExpiredJan 09, 97Apr 24, 01[C08L]
6054543 Amorphous olefin co/ter-polymersExpiredJun 26, 98Apr 25, 00[C08F]
5981665 Polyolefine-polyacrylate based thermoplastic elastomerExpiredAug 20, 97Nov 09, 99[C08F]
5929168 Polyphenylene ether blends and a process for the preparation thereofExpiredNov 19, 96Jul 27, 99[C08L, C08K]
5843541 Liquid crystalline copoly(ester-imide)s and a process for the preparation thereofExpiredDec 23, 96Dec 01, 98[C08G, B29D, B32B]
5677394 Melt-processable block copolyesterimide and method for manufacturing itExpiredApr 28, 95Oct 14, 97[C08G, C08L]

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