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Expired European patentEurope

Components and catalysts for the polymerization of olefins

EP 0045975 B1 · Applicant: Montedison 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 August 13, 1981 and granted April 19, 1989. A European patent lasts at most 20 years from filing, so its term ended August 13, 2001.
  • 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 13, 2007.
  • 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 13, 1981
PublishedFebruary 17, 1982
GrantedApril 19, 1989
Term endedAugust 13, 2001
Application numberEP 81106299
Classification (CPC)C08F10/00

Timeline

Timeline From EPO dates

1982198419861988199019921994199619982000Application filedAug 13, 1981PublishedFeb 17, 1982Patent grantedApril 19, 1989Term endedAug 13, 2001

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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