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Expired European patentEurope

Method for preventing fouling and sheeting in gas phase reactors

EP 0820474 B1 · Applicant: BOREALIS POLYMERS OY

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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 April 10, 1996 and granted February 2, 2000. A European patent lasts at most 20 years from filing, so its term ended April 10, 2016.
  • 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 10, 2021.
  • 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 10, 1996
PublishedJanuary 28, 1998
GrantedFebruary 2, 2000
Term endedApril 10, 2016
Application numberEP 96910040
Classification (CPC)B01J8/24 +2 more

Timeline

Timeline From EPO dates

1997199920012003200520072009201120132015Application filedApril 10, 1996PublishedJan 28, 1998Patent grantedFeb 2, 2000Term endedApril 10, 2016

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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