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Expired European patentEurope

Continuous method of treating a polymer reaction mixture

EP 0336963 B1 · Applicant: MITSUI TOATSU CHEMICALS, Inc.

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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 September 30, 1987 and granted December 8, 1993. A European patent lasts at most 20 years from filing, so its term ended September 30, 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 March 30, 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.
FiledSeptember 30, 1987
PublishedOctober 18, 1989
GrantedDecember 8, 1993
Term endedSeptember 30, 2007
Application numberEP 87906451
Classification (CPC)C08F6/06 +1 more

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedSep 30, 1987PublishedOct 18, 1989Patent grantedDec 8, 1993Term endedSep 30, 2007

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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