Nova Patents
NO891779L

Air separation process using packed columns for oxygen and argon recovery.

Abstract

Argon recovery in a cryogenic air separation process is improved by using structured packing in at least the low pressure column (36) and an argon sidearm column (72) of an integrated multi-column, e.g. three column, cryogenic distillation system.

Term

No projected expiry on record.

  1. Priority
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235 members in 16 offices

This recordMember, by publication datePriority claim6 more offices are in the list below

Priority claims3

Priority claims
DocumentOfficeKindDate
18768288United States of AmericaA
88187682–––
US19880187682–––

Members235

Family members, oldest first
DocumentOfficeKind
DK693788D0DenmarkD0
FI885761A0FinlandA0
NO885528D0NorwayD0
NO891779D0NorwayD0
US4836836AUnited States of AmericaA
DK693788ADenmarkA
FI885761AFinlandA
FI885761LFinlandL
NO885528LNorwayL
EP0321163A2European Patent Office (EPO)A2
AU2682688AAustraliaA
AU2682688AAustraliaA
KR890009440ARepublic of KoreaA
EP0321163A3European Patent Office (EPO)A3
JPH01244269AJapanA
US4871382AUnited States of AmericaA
NO891779LThis recordNorwayL
EP0341854A1European Patent Office (EPO)A1
KR890015774ARepublic of KoreaA
AU3329589AAustraliaA
JPH01312382AJapanA
ZA889359BSouth AfricaB
AU601105B2AustraliaB2
AU602620B2AustraliaB2
CA1280355CCanadaC
CA1280964CCanadaC
KR910002167B1Republic of KoreaB1
KR910003111B1Republic of KoreaB1
NO169197BNorwayB
USRE34038EUnited States of AmericaE
MX165562BMexicoB
EP0341854B1European Patent Office (EPO)B1
DE68903598D1GermanyD1
DK166105BDenmarkB
DE68903598T2GermanyT2
FI89410BFinlandB
ES2037416T3SpainT3
GR3006617T3GreeceT3
NO176221BNorwayB
JPH07113514B2JapanB2
JP2516680B2JapanB2
EP0321163B1European Patent Office (EPO)B1
DE3855487D1GermanyD1
ES2092985T3SpainT3
DE3855487T2GermanyT2
NO176221CNorwayC
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CA2345439A1CanadaA1
CA2346525A1CanadaA1
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CA2669175A1CanadaA1
CA2832936A1CanadaA1
WO0025844A1World Intellectual Property Organization (WIPO)A1
WO0025852A1World Intellectual Property Organization (WIPO)A1
AU1330500AAustraliaA
AU1456700AAustraliaA
CA2390298A1CanadaA1
WO0130421A2World Intellectual Property Organization (WIPO)A2
AU1348501AAustraliaA
US6248093B1United States of AmericaB1
EP1124600A1European Patent Office (EPO)A1
EP1124608A1European Patent Office (EPO)A1
WO0130421A3World Intellectual Property Organization (WIPO)A3
US6362591B1United States of AmericaB1
US2002043951A1United States of AmericaA1
US2002077598A1United States of AmericaA1
EP1227855A2European Patent Office (EPO)A2
JP2002528234AJapanA
JP2002528676AJapanA
US2002173748A1United States of AmericaA1
US6555986B2United States of AmericaB2
US6585695B1United States of AmericaB1
US2003125672A1United States of AmericaA1
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AT268615TAustriaT
ATE268615T1AustriaT1
DK166105CDenmarkC
DE60011457D1GermanyD1
JP3546015B2JapanB2
US6800071B1United States of AmericaB1
DK1227855T3DenmarkT3
US6817990B2United States of AmericaB2
US2004243065A1United States of AmericaA1
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EP1124600B1European Patent Office (EPO)B1
AT289523TAustriaT
ATE289523T1AustriaT1
DE69923858D1GermanyD1
DE60011457T2GermanyT2
CA2345439CCanadaC
US2005197626A1United States of AmericaA1
EP1124608B1European Patent Office (EPO)B1
AT311925TAustriaT
ATE311925T1AustriaT1
DE69923858T2GermanyT2
DE69928827D1GermanyD1
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