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Expired European patentEurope

Porous composite membrane, and a method of treating a membrane

EP 1154841 B1 · Applicant: BHA Technologies, Inc.

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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 August 19, 1999 and granted May 12, 2004. A European patent lasts at most 20 years from filing, so its term ended August 19, 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 February 19, 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.
FiledAugust 19, 1999
PublishedNovember 21, 2001
GrantedMay 12, 2004
Term endedAugust 19, 2019
Application numberEP 99945096
Classification (CPC)B01D69/1213 +2 more

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedAug 19, 1999PublishedNov 21, 2001Patent grantedMay 12, 2004Term endedAug 19, 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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