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European application, no grantEurope

Method for obtaining ultrathin protected phototools

EP 0300475 A2 · Applicant: E.I. DU PONT DE NEMOURS AND COMPANY

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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 July 21, 1988 and never granted as a European patent. Had it been granted, its 20-year term would have ended July 21, 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 January 21, 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.
FiledJuly 21, 1988
PublishedJanuary 25, 1989
GrantedNever granted
Term endedJuly 21, 2008
Application numberEP 88111734
Classification (CPC)G03F1/48

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedJuly 21, 1988PublishedJan 25, 1989Term endedJuly 21, 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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.