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Expired European patentEurope

Production of polyester and toner containing the same

EP 0195604 B1 · Applicant: Kao Corporation

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Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

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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 March 13, 1986 and granted April 29, 1992. A European patent lasts at most 20 years from filing, so its term ended March 13, 2006.
  • 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 September 13, 2011.
  • 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.
FiledMarch 13, 1986
PublishedSeptember 24, 1986
GrantedApril 29, 1992
Term endedMarch 13, 2006
Application numberEP 86301826
Classification (CPC)C08G63/00 +2 more

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedMarch 13, 1986PublishedSep 24, 1986Patent grantedApril 29, 1992Term endedMarch 13, 2006

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.