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Expired European patentEurope

Process for making allyl polymers and copolymers

EP 0686646 B1 · Applicant: ARCO Chemical Technology, L.P.

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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 5, 1995 and granted January 7, 1999. A European patent lasts at most 20 years from filing, so its term ended June 5, 2015.
  • 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 5, 2020.
  • 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 5, 1995
PublishedDecember 13, 1995
GrantedJanuary 7, 1999
Term endedJune 5, 2015
Application numberEP 95303827
Classification (CPC)C08F18/12 +2 more

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedJune 5, 1995PublishedDec 13, 1995Patent grantedJan 7, 1999Term endedJune 5, 2015

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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