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Expired European patentEurope

Dry etching gas

EP 1014433 B1 · Applicant: ASAHI GLASS COMPANY 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 November 5, 1997 and granted April 8, 2009. A European patent lasts at most 20 years from filing, so its term ended November 5, 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 May 5, 2023.
  • 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.
FiledNovember 5, 1997
PublishedJune 28, 2000
GrantedApril 8, 2009
Term endedNovember 5, 2017
Application numberEP 97911455
Classification (CPC)H10P50/242

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedNov 5, 1997PublishedJune 28, 2000Patent grantedApril 8, 2009Term endedNov 5, 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

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