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Expired European patentEurope

Fluorescent substance and process for producing the same, and light emitting device using said fluorescent substance

EP 1867697 B1 · Applicant: Dowa Mining Co., 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 March 3, 2006 and granted May 14, 2014. A European patent lasts at most 20 years from filing, so its term ended March 3, 2026.
  • 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.
FiledMarch 3, 2006
PublishedDecember 19, 2007
GrantedMay 14, 2014
Term endedMarch 3, 2026
Application numberEP 06715234
Classification (CPC)C09K11/77218 +2 more

Timeline

Timeline From EPO dates

2007200920112013201520172019202120232025Application filedMarch 3, 2006PublishedDec 19, 2007Patent grantedMay 14, 2014Term endedMarch 3, 2026

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

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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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