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Expired European patentEurope

Composite semipermeable membrane and production thereof

EP 0465649 B1 · Applicant: TORAY INDUSTRIES, 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 January 26, 1990 and granted March 26, 1997. A European patent lasts at most 20 years from filing, so its term ended January 26, 2010.
  • 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 July 26, 2015.
  • 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.
FiledJanuary 26, 1990
PublishedJanuary 15, 1992
GrantedMarch 26, 1997
Term endedJanuary 26, 2010
Application numberEP 90902389
Classification (CPC)B01D71/56 +1 more

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedJan 26, 1990PublishedJan 15, 1992Patent grantedMarch 26, 1997Term endedJan 26, 2010

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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