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European application, no grantEurope

Metallo-porphirins as bleach catalyst and process for cleaning fabrics

EP 0306089 A2 · Applicant: UNILEVER N.V.

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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 29, 1988 and never granted as a European patent. Had it been granted, its 20-year term would have ended August 29, 2008.
  • 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 March 1, 2014.
  • 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 29, 1988
PublishedMarch 8, 1989
GrantedNever granted
Term endedAugust 29, 2008
Application numberEP 88201833
Classification (CPC)C11D3/3932

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedAug 29, 1988PublishedMarch 8, 1989Term endedAug 29, 2008

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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