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Expired European patentEurope

Process for the preparation of ethylene propylene copolymers with a low content of residual chlorine

EP 0835883 B1 · Applicant: ENICHEM S.p.A.

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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 September 16, 1997 and granted October 27, 2004. A European patent lasts at most 20 years from filing, so its term ended September 16, 2017.
  • 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 March 16, 2023.
  • 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.
FiledSeptember 16, 1997
PublishedApril 15, 1998
GrantedOctober 27, 2004
Term endedSeptember 16, 2017
Application numberEP 97116063
Classification (CPC)C08F210/16

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedSep 16, 1997PublishedApril 15, 1998Patent grantedOct 27, 2004Term endedSep 16, 2017

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

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