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Expired European patentEurope

Luminescent phosphor composition, process for its preparation and fluorescent lamp employing it

EP 0228010 B1 · Applicant: KASEI OPTONIX, 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 December 15, 1986 and granted August 21, 1991. A European patent lasts at most 20 years from filing, so its term ended December 15, 2006.
  • 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 June 15, 2012.
  • 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.
FiledDecember 15, 1986
PublishedJuly 8, 1987
GrantedAugust 21, 1991
Term endedDecember 15, 2006
Application numberEP 86117408
Classification (CPC)C09K11/025 +2 more

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedDec 15, 1986PublishedJuly 8, 1987Patent grantedAug 21, 1991Term endedDec 15, 2006

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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