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Expired European patentEurope

Polyurethane resins and polyurethane resin coating compositions

EP 0023934 B1 · Applicant: TORAY INDUSTRIES, 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 August 14, 1979 and granted November 14, 1984. A European patent lasts at most 20 years from filing, so its term ended August 14, 1999.
  • 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 14, 2005.
  • 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 14, 1979
PublishedFebruary 18, 1981
GrantedNovember 14, 1984
Term endedAugust 14, 1999
Application numberEP 79102958
Classification (CPC)C08G18/771

Timeline

Timeline From EPO dates

1980198219841986198819901992199419961998Application filedAug 14, 1979PublishedFeb 18, 1981Patent grantedNov 14, 1984Term endedAug 14, 1999

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.