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European application, no grantEurope

Method for removing residues with reduced etching of oxide

EP 1171908 A1 · Applicant: Koninklijke Philips Electronics N.V.

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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 January 17, 2001 and never granted as a European patent. Had it been granted, its 20-year term would have ended January 17, 2021.
  • 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 July 17, 2026.
  • 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.
FiledJanuary 17, 2001
PublishedJanuary 16, 2002
GrantedNever granted
Term endedJanuary 17, 2021
Application numberEP 01906565
Classification (CPC)G03F7/427 +1 more

Timeline

Timeline From EPO dates

2002200420062008201020122014201620182020Application filedJan 17, 2001PublishedJan 16, 2002Term endedJan 17, 2021

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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