Daicel Ltd.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4414351 Primer for powder coating comprising (a) diene polymer (b) MgO and (c) cobalt or manganese ionExpiredNov 05, 80Nov 08, 83[B05D, C08K]
4299748 Aqueous coating compositions containing electroconductive copolymerExpiredDec 14, 78Nov 10, 81[C08L]
4296243 Process for producing sorbic acid or its derivativesExpiredJul 27, 79Oct 20, 81[C07C]
4292984 Filter for cigarette smokeExpiredApr 23, 79Oct 06, 81[A24D]
4292417 Semipermeable membraneExpiredSep 20, 79Sep 29, 81[C08G, C02F]
4289130 Absorbent material for sanitary productsExpiredAug 21, 79Sep 15, 81[A61F]
4288145 Fiber for optical communicationsExpiredApr 02, 79Sep 08, 81[G02B, D02G]
4285677 Method and apparatus for the manufacture of cigarette filters containing particulate materialExpiredSep 07, 79Aug 25, 81[A24C]
4274709 Optical fiber for transmissionExpiredNov 21, 79Jun 23, 81[G02B]
4269972 Process for producing cellulose diacetate having improved resistance to delustering phenomenon in hot waterExpiredJun 11, 79May 26, 81[C08B]
4268579 Primer for powder coatingExpiredDec 20, 78May 19, 81[B05D]
4267198 Melt-coated preparation containing sorbic acidExpiredJun 27, 79May 12, 81[A23B]
4252697 Process for preparing an aqueous dispersion of synthetic resin mutually dissolved with a cellulose acetate alkylateExpiredOct 11, 79Feb 24, 81[C08L]
4246009 Smoke filter material and use thereofExpiredJul 17, 78Jan 20, 81[B01D]
4235722 Liquid treating unitExpiredMay 15, 78Nov 25, 80[B01D]
4218959 Pressure regulating diaphragmExpiredJan 22, 79Aug 26, 80[F01B, F16J]
4210696 Antistatic composite film and process for the preparation thereofExpiredNov 27, 78Jul 01, 80[B32B]
4209340 Cellulose ester resin compositionExpiredFeb 27, 78Jun 24, 80[C08L]
4209467 Hydroformylation processExpiredJan 02, 79Jun 24, 80[C07C]
4205040 Exposed aggregate finishing method for concreteExpiredOct 22, 75May 27, 80[B28B]

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