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Expired European patentEurope

A two-stage complete recycle pressure-swing adsorption process for gas seperation

EP 1772182 B1 · Applicant: Chengdu Tianli Chemical Engineering Technology Co. Ltd.

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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.

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Why it's free to use

  • Filed May 9, 2005 and granted January 26, 2011. A European patent lasts at most 20 years from filing, so its term ended May 9, 2025.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledMay 9, 2005
PublishedApril 11, 2007
GrantedJanuary 26, 2011
Term endedMay 9, 2025
Application numberEP 05745102
Classification (CPC)B01D53/047

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedMay 9, 2005PublishedApril 11, 2007Patent grantedJan 26, 2011Term endedMay 9, 2025

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

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