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Expired European patentEurope

Composite membrane with polyalkylene oxide modified polyamide surface

EP 1200178 B1 · Applicant: THE DOW CHEMICAL COMPANY

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Overview

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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 23, 2000 and granted November 12, 2008. A European patent lasts at most 20 years from filing, so its term ended May 23, 2020.
  • 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 November 23, 2025.
  • 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 23, 2000
PublishedMay 2, 2002
GrantedNovember 12, 2008
Term endedMay 23, 2020
Application numberEP 00932730
Classification (CPC)B01D71/56 +2 more

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedMay 23, 2000PublishedMay 2, 2002Patent grantedNov 12, 2008Term endedMay 23, 2020

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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