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Expired European patentEurope

Photoimaging processes and compositions

EP 0245431 B1 · Applicant: HOECHST CELANESE CORPORATION

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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 October 10, 1986 and granted September 20, 1995. A European patent lasts at most 20 years from filing, so its term ended October 10, 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 April 10, 2012.
  • 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.
FiledOctober 10, 1986
PublishedNovember 19, 1987
GrantedSeptember 20, 1995
Term endedOctober 10, 2006
Application numberEP 86907032
Classification (CPC)G03F9/00 +2 more

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedOct 10, 1986PublishedNov 19, 1987Patent grantedSep 20, 1995Term endedOct 10, 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

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