Expired European patentEurope

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EP 0241016 B1 · Applicant: IDEMITSU PETROCHEMICAL CO. 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 April 8, 1987 and granted January 16, 1991. A European patent lasts at most 20 years from filing, so its term ended April 8, 2007.
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 8, 2012.
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 8, 1987

PublishedOctober 14, 1987

GrantedJanuary 16, 1991

Term endedApril 8, 2007

Application numberEP 87105211

Classification (CPC)B29C65/76 +2 more

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPO European Patent RegisterProcedure, status, file inspection and legal events.EPO Linked open EP data recordThe bibliographic record this page is built from.EPO