Assignee
CELANESE CORP
US·791 granted patents·22,903 citations·filing 1968–1991
Top patents by PatentIndex Score
791 records- 0199US4184996AMelt processable thermotropic wholly aromatic polyesterCELANESE CORP·Filed 1978·Granted Jan 22, 1980·131 cites·15 claims
- 0299US4169798AWell-treating compositionsCELANESE CORP·Filed 1977·Granted Oct 2, 1979·194 cites·11 claims
- 0399US4161470APolyester of 6-hydroxy-2-naphthoic acid and para-hydroxy benzoic acid capable of readily undergoing melt processingCELANESE CORP·Filed 1977·Granted Jul 17, 1979·405 cites·42 claims
- 0499US4048110ARhenium catalyst compositionCELANESE CORP·Filed 1976·Granted Sep 13, 1977·397 cites·10 claims
- 0599US4031307ACationic polygalactomannan compositionsCELANESE CORP·Filed 1976·Granted Jun 21, 1977·956 cites·3 claims
- 0698US4642394AProduction of propanediolsCELANESE CORP·Filed 1985·Granted Feb 10, 1987·101 cites·15 claims
- 0798US4615806ARemoval of iodide compounds from non-aqueous organic mediaCELANESE CORP·Filed 1985·Granted Oct 7, 1986·119 cites·7 claims
- 0898US4522974AMelt processable polyester capable of forming an anisotropic melt comprising a relatively low concentration of 6-oxy-2-naphthoyl moiety-4-benzoyl moiety, 1,4-dioxyphenylene moiety, isophthaloyl moiety and terephthaloyl moietyCELANESE CORP·Filed 1983·Granted Jun 11, 1985·110 cites·22 claims
- 0998US4473682AMelt processable polyester capable of forming an anisotropic melt comprising a relatively low concentration of 6-oxy-2-naphthoyl moiety, 4-oxybenzoyl moiety, 4,4'-dioxybiphenyl moiety, and terephthaloyl moietyCELANESE CORP·Filed 1983·Granted Sep 25, 1984·115 cites·24 claims
- 1098US4318842APolyester of 6-hydroxy-2-naphthoic acid, aromatic diol, and 1,4-cyclohexanedicarboxylic acid capable of undergoing melt processingCELANESE CORP·Filed 1980·Granted Mar 9, 1982·106 cites·37 claims
- 1198US4256624APolyester of 6-hydroxy-2-naphthoic acid, aromatic diol, and aromatic diacid capable of undergoing melt processingCELANESE CORP·Filed 1979·Granted Mar 17, 1981·131 cites·35 claims
- 1298US4219461APolyester of 6-hydroxy-2-naphthoic acid, para-hydroxy benzoic acid, aromatic diol, and aromatic diacid capable of readily undergoing melt processingCELANESE CORP·Filed 1979·Granted Aug 26, 1980·149 cites·42 claims
- 1398US4130545AMelt processable thermotropic wholly aromatic polyester comprising both para-oxybenzoyl and meta-oxybenzoyl moietiesCELANESE CORP·Filed 1977·Granted Dec 19, 1978·153 cites·18 claims
- 1498US4067852AMelt processable thermotropic wholly aromatic polyester containing polybenzoyl unitsCELANESE CORP·Filed 1976·Granted Jan 10, 1978·187 cites·11 claims
- 1598US3997638AProduction of metal ion containing carbon fibers useful in electron shielding applicationsCELANESE CORP·Filed 1974·Granted Dec 14, 1976·453 cites·24 claims
- 1697US4524217AProcess for producing N-acyl-hydroxy aromatic aminesCELANESE CORP·Filed 1984·Granted Jun 18, 1985·83 cites·6 claims
- 1797US4355132AAnisotropic melt phase forming poly(ester-amide) derived from p-hydroxybenzoic acid, 2,6-naphthalenedicarboxylic acid, aromatic monomer capable of forming an amide linkage, and, optionally, hydroquinone and additional carbocyclic dicarboxylic acidCELANESE CORP·Filed 1981·Granted Oct 19, 1982·101 cites·45 claims
- 1897US4351917APoly(ester-amide) capable of forming an anisotropic melt phase derived from 6-hydroxy-2-naphthoic acid, aromatic monomer capable of forming an amide linkage, and other aromatic hydroxyacidCELANESE CORP·Filed 1981·Granted Sep 28, 1982·95 cites·33 claims
- 1997US4351918APoly(ester-amide) capable of forming an anisotropic melt phase derived from 6-hydroxy-2-naphthoic acid, other aromatic hydroxyacid, carbocyclic dicarboxylic acid, and aromatic monomer capable of forming an amide linkageCELANESE CORP·Filed 1981·Granted Sep 28, 1982·96 cites·39 claims
- 2097US4339369ACationic epoxide-amine reaction productsCELANESE CORP·Filed 1981·Granted Jul 13, 1982·115 cites·27 claims
- 2197US4330457APoly(ester-amide) capable of forming an anisotropic melt phase derived from 6-hydroxy-2-naphthoic acid, dicarboxylic acid, and aromatic monomer capable of forming an amide linkageCELANESE CORP·Filed 1980·Granted May 18, 1982·99 cites·17 claims
- 2297US4201714AStabilized catalyst complex of rhodium metal, bidentate ligand and monodentate ligandCELANESE CORP·Filed 1978·Granted May 6, 1980·51 cites·5 claims
- 2397US4101525APolyester yarn of high strength possessing an unusually stable internal structureCELANESE CORP·Filed 1976·Granted Jul 18, 1978·97 cites·16 claims
- 2497US4083829AMelt processable thermotropic wholly aromatic polyesterCELANESE CORP·Filed 1977·Granted Apr 11, 1978·254 cites·23 claims
- 2596US4588575AProduction of microcrystalline metal oxidesCELANESE CORP·Filed 1984·Granted May 13, 1986·49 cites·30 claims
- 2696US4480115ADirect hydrogenation of carboxylic acids to alcohol and estersCELANESE CORP·Filed 1983·Granted Oct 30, 1984·184 cites·14 claims
- 2796US4468364AProcess for extruding thermotropic liquid crystalline polymersCELANESE CORP·Filed 1983·Granted Aug 28, 1984·110 cites·17 claims
- 2896US4405688AMicroporous hollow fiber and process and apparatus for preparing such fiberCELANESE CORP·Filed 1982·Granted Sep 20, 1983·161 cites·5 claims
- 2996US4318841APolyester of 6-hydroxy-2-naphthoic acid, para-hydroxy benzoic acid, terephthalic acid, and resorcinol capable of readily undergoing melt processing to form shaped articles having increased impact strengthCELANESE CORP·Filed 1980·Granted Mar 9, 1982·84 cites·30 claims
- 3096US4290987AProcess for preparing microporous hollow fibersCELANESE CORP·Filed 1979·Granted Sep 22, 1981·83 cites·5 claims
- 3196US4267386AOlefin oxidation catalystCELANESE CORP·Filed 1979·Granted May 12, 1981·47 cites·11 claims
- 3296US4246148ATwo component aqueous coating composition based on an epoxy-polyamine adduct and a polyepoxideCELANESE CORP·Filed 1979·Granted Jan 20, 1981·102 cites·13 claims
- 3396US4238540AFiber reinforced composite shaft with metallic connector sleeves mounted by connector ring interlockCELANESE CORP·Filed 1979·Granted Dec 9, 1980·154 cites·21 claims
- 3496US4238539AFiber reinforced composite shaft with metallic connector sleeves mounted by a knurl interlockCELANESE CORP·Filed 1979·Granted Dec 9, 1980·112 cites·8 claims
- 3596US4236386AFiber reinforced composite shaft with metallic connector sleeves mounted by a polygonal surface interlockCELANESE CORP·Filed 1979·Granted Dec 2, 1980·112 cites·10 claims
- 3696US4171626ACarbon fiber reinforced composite drive shaftCELANESE CORP·Filed 1978·Granted Oct 23, 1979·116 cites·32 claims
- 3796US4064145AProduction of tetrahydrofuranCELANESE CORP·Filed 1976·Granted Dec 20, 1977·37 cites·1 claims
- 3895US4683327AAnisotropic heat-curable acrylic terminated monomersCELANESE CORP·Filed 1985·Granted Jul 28, 1987·61 cites·17 claims
- 3995US4393191APreparation of aromatic polyesters by direct self-condensation of aromatic hydroxy acidsCELANESE CORP·Filed 1982·Granted Jul 12, 1983·74 cites·11 claims
- 4095US4346142AHydrophilic monomer treated microporous films and processCELANESE CORP·Filed 1980·Granted Aug 24, 1982·93 cites·15 claims
- 4195US4337190APolyester of 6-hydroxy-2-naphthoic acid and meta-hydroxy benzoic acid capable of readily undergoing melt processingCELANESE CORP·Filed 1980·Granted Jun 29, 1982·67 cites·35 claims
- 4295US4257997ASolvent stretch process for preparing a microporous filmCELANESE CORP·Filed 1979·Granted Mar 24, 1981·81 cites·27 claims
- 4395US4224187AOlefin oxidation catalyst and process for its preparationCELANESE CORP·Filed 1978·Granted Sep 23, 1980·41 cites·6 claims
- 4495US4169861AHydroformylation processCELANESE CORP·Filed 1977·Granted Oct 2, 1979·78 cites·26 claims
- 4595US4077858ACompletely polymerized ultraviolet cured coatingsCELANESE CORP·Filed 1976·Granted Mar 7, 1978·73 cites·4 claims
- 4695US4057607AProcess for preparing shear degradable particle-containing resin powdersCELANESE CORP·Filed 1975·Granted Nov 8, 1977·80 cites·15 claims
- 4794US4634530AChemical modification of preformed polybenzimidazole semipermeable membraneCELANESE CORP·Filed 1982·Granted Jan 6, 1987·82 cites·42 claims
- 4894US4620032ADepolymerization of condensation polymers involving a pre-molecular weight reduction stepCELANESE CORP·Filed 1984·Granted Oct 28, 1986·67 cites·25 claims
- 4994US4608405AAqueous based epoxy resin curing agentsCELANESE CORP·Filed 1985·Granted Aug 26, 1986·76 cites·22 claims
- 5094US4606875AProcess for preparing shaped articles of rigid rod heterocyclic liquid crystalline polymersCELANESE CORP·Filed 1983·Granted Aug 19, 1986·58 cites·15 claims
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