Technochemie GmbH

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5120824 Alkenylphenoxyimide modified polyimideExpiredDec 20, 89Jun 09, 92[C08G]
4981934 Curable composition comprising bis-imide and bis-(alkenyl phenol)ExpiredAug 17, 89Jan 01, 91[C08F]
4939305 Alkenyl compoundsExpiredNov 30, 88Jul 03, 90[C07C]
4917954 Laminated article from curable resin composition comprising bis maleimide and alkenyl phenyl hydroxy etherExpiredNov 30, 88Apr 17, 90[B05D]
4871821 Curable resin from bis-maleimide and alkenyl phenyl hydroxy etherExpiredMar 25, 88Oct 03, 89[C08F]
4806419 Bisimide/polyhydantoin curable resinsExpiredMar 06, 87Feb 21, 89[C08F, B32B]
4789704 Curable resin from bis maleimide and alkenyl phenyl hydroxy etherExpiredDec 17, 86Dec 06, 88[C08F]
4737568 Curable resin from bis-imide amino acid hydrazide and alkenyl phenol or etherExpiredJun 26, 86Apr 12, 88[C08G]
4593083 Curable composition comprising bismaleimide and maleimide-amideExpiredJul 13, 84Jun 03, 86[C08F]
4587281 Modified thermosetting imide resins with improved fracture toughnessExpiredFeb 28, 85May 06, 86[C08G]
4555426 Preformed, laminated plastic panelsExpiredOct 19, 83Nov 26, 85[B32B]
4520145 Modified thermosetting imide resins with improved fracture toughnessExpiredOct 29, 82May 28, 85[C08G]
4356227 Fiber materials preimpregnated with duromeric polyimide resins and process for their preparationExpiredOct 31, 80Oct 26, 82[C08G, B05D, B32B]
4303779 Thermosetting imide resins from dihydrazideExpiredNov 27, 79Dec 01, 81[C08G]
4269966 Polyimide prepolymer, polyimide resin from imide acid chloride and diamineExpiredDec 04, 78May 26, 81[C08G]
4239883 Polyimide preparation from imido acyl halideExpiredJul 08, 76Dec 16, 80[C08G]
4211860 Thermosetting imide resins from dihydrazide of dicarboxylic acidExpiredNov 29, 78Jul 08, 80[C08G]
4211861 Thermosetting imide resins from amino acid hydrazideExpiredNov 29, 78Jul 08, 80[C08G]

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