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Expired European patentEurope

Butadiene-styrene block copolymers having an asymmetric construction, their preparation and use in moulding masses

EP 0289917 B1 · Applicant: BASF Aktiengesellschaft

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Overview

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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 27, 1988 and granted November 10, 1993. A European patent lasts at most 20 years from filing, so its term ended April 27, 2008.
  • 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 27, 2013.
  • 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 27, 1988
PublishedNovember 9, 1988
GrantedNovember 10, 1993
Term endedApril 27, 2008
Application numberEP 88106694
Classification (CPC)C08F297/04

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedApril 27, 1988PublishedNov 9, 1988Patent grantedNov 10, 1993Term endedApril 27, 2008

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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