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European application, no grantEurope

Vat dyes

EP 0102019 A2 · Applicant: BAYER AG

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Overview

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

Read the whole patent

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 13, 1983 and never granted as a European patent. Had it been granted, its 20-year term would have ended August 13, 2003.
  • 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 13, 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.
FiledAugust 13, 1983
PublishedMarch 7, 1984
GrantedNever granted
Term endedAugust 13, 2003
Application numberEP 83108025
Classification (CPC)C09B49/124

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedAug 13, 1983PublishedMarch 7, 1984Term endedAug 13, 2003

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.