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Expired European patentEurope

Monoazo dyestuffs for polyester fibers

EP 0122482 B1 · Applicant: RESEARCH ASSOCIATION OF SYNTHETIC DYESTUFFS

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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 March 16, 1984 and granted June 24, 1987. A European patent lasts at most 20 years from filing, so its term ended March 16, 2004.
  • 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 16, 2009.
  • 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 16, 1984
PublishedOctober 24, 1984
GrantedJune 24, 1987
Term endedMarch 16, 2004
Application numberEP 84102930
Classification (CPC)C09B29/0085

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedMarch 16, 1984PublishedOct 24, 1984Patent grantedJune 24, 1987Term endedMarch 16, 2004

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.