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Expired European patentEurope

Process for the production of a concentrated solid photo-activator preparation

EP 0124478 B1 · Applicant: CIBA-GEIGY AG

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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 19, 1984 and granted February 4, 1987. A European patent lasts at most 20 years from filing, so its term ended March 19, 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 19, 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 19, 1984
PublishedNovember 7, 1984
GrantedFebruary 4, 1987
Term endedMarch 19, 2004
Application numberEP 84810127
Classification (CPC)C09B67/0096 +1 more

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedMarch 19, 1984PublishedNov 7, 1984Patent grantedFeb 4, 1987Term endedMarch 19, 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

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