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Expired European patentEurope

A method for desorption of one or more compounds from an absorbent solution and use thereof

EP 1089796 B1 · Applicant: NORSK HYDRO ASA

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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 April 23, 1999 and granted September 17, 2003. A European patent lasts at most 20 years from filing, so its term ended April 23, 2019.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by October 23, 2024.
  • 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.
FiledApril 23, 1999
PublishedApril 11, 2001
GrantedSeptember 17, 2003
Term endedApril 23, 2019
Application numberEP 99924062
Classification (CPC)B01D3/38 +2 more

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedApril 23, 1999PublishedApril 11, 2001Patent grantedSep 17, 2003Term endedApril 23, 2019

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

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

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