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Expired European patentEurope

Glass base material working method, worked glass product, and stress applicator

EP 1600427 B1 · Applicant: Olympus Corporation

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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 20, 2004 and granted October 10, 2012. A European patent lasts at most 20 years from filing, so its term ended February 20, 2024.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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 20, 2004
PublishedNovember 30, 2005
GrantedOctober 10, 2012
Term endedFebruary 20, 2024
Application numberEP 04713197
Classification (CPC)C03C19/00 +2 more

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedFeb 20, 2004PublishedNov 30, 2005Patent grantedOct 10, 2012Term endedFeb 20, 2024

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.