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Expired European patentEurope

Process for producing propylene block copolymer

EP 0174863 B1 · Applicant: MITSUI PETROCHEMICAL INDUSTRIES, LTD.

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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 12, 1985 and granted February 7, 1990. A European patent lasts at most 20 years from filing, so its term ended September 12, 2005.
  • 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 12, 2011.
  • 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 12, 1985
PublishedMarch 19, 1986
GrantedFebruary 7, 1990
Term endedSeptember 12, 2005
Application numberEP 85306506
Classification (CPC)C08F297/08

Timeline

Timeline From EPO dates

1986198819901992199419961998200020022004Application filedSep 12, 1985PublishedMarch 19, 1986Patent grantedFeb 7, 1990Term endedSep 12, 2005

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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