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Thermal treatment process of positive photoresist composition

EP 0885409 A2 · Applicant: Clariant International Ltd.

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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 February 27, 1997 and never granted as a European patent. Had it been granted, its 20-year term would have ended February 27, 2017.
  • 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 August 27, 2022.
  • 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.
FiledFebruary 27, 1997
PublishedDecember 23, 1998
GrantedNever granted
Term endedFebruary 27, 2017
Application numberEP 97914802
Classification (CPC)G03F7/168

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedFeb 27, 1997PublishedDec 23, 1998Term endedFeb 27, 2017

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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