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Expired European patentEurope

Process for the polymerisation of alpha-olefins and method for preparing solid catalytic complexes for use in this polymerisation process

EP 0000007 B1 · Applicant: SOLVAY & Cie (Société Anonyme)

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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 June 1, 1978 and granted May 20, 1981. A European patent lasts at most 20 years from filing, so its term ended June 1, 1998.
  • 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 December 1, 2003.
  • 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.
FiledJune 1, 1978
PublishedDecember 20, 1978
GrantedMay 20, 1981
Term endedJune 1, 1998
Application numberEP 78200026
Classification (CPC)C08F10/00

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

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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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