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Expired European patentEurope

Polyfluoropolyethers having pendant perfluoroalkoxy groups

EP 0259980 B1 · Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY

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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 August 12, 1987 and granted March 1, 1995. A European patent lasts at most 20 years from filing, so its term ended August 12, 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 February 12, 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.
FiledAugust 12, 1987
PublishedMarch 16, 1988
GrantedMarch 1, 1995
Term endedAugust 12, 2007
Application numberEP 87307141
Classification (CPC)C08G65/007 +2 more

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedAug 12, 1987PublishedMarch 16, 1988Patent grantedMarch 1, 1995Term endedAug 12, 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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