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Expired European patentEurope

Method of degrading polymer

EP 0761732 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 February 27, 1996 and granted July 7, 2004. A European patent lasts at most 20 years from filing, so its term ended February 27, 2016.
  • 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 August 27, 2021.
  • 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.
FiledFebruary 27, 1996
PublishedMarch 12, 1997
GrantedJuly 7, 2004
Term endedFebruary 27, 2016
Application numberEP 96903251
Classification (CPC)C12N1/00 +2 more

Timeline

Timeline From EPO dates

1997199920012003200520072009201120132015Application filedFeb 27, 1996PublishedMarch 12, 1997Patent grantedJuly 7, 2004Term endedFeb 27, 2016

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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