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Expired European patentEurope

Composition for stripping photoresist and organic materials from substrate surfaces

EP 1097405 B1 · Applicant: CLARIANT INTERNATIONAL LTD.

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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 June 30, 1999 and granted November 29, 2006. A European patent lasts at most 20 years from filing, so its term ended June 30, 2019.
  • 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 December 30, 2024.
  • 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.
FiledJune 30, 1999
PublishedMay 9, 2001
GrantedNovember 29, 2006
Term endedJune 30, 2019
Application numberEP 99931215
Classification (CPC)G03F7/426

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedJune 30, 1999PublishedMay 9, 2001Patent grantedNov 29, 2006Term endedJune 30, 2019

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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