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Expired European patentEurope

Metal halide lamp

EP 0670588 B1 · Applicant: HAMAMATSU PHOTONICS K.K.

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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 March 2, 1994 and granted May 14, 1997. A European patent lasts at most 20 years from filing, so its term ended March 2, 2014.
  • 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 September 2, 2019.
  • 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 2, 1994
PublishedSeptember 6, 1995
GrantedMay 14, 1997
Term endedMarch 2, 2014
Application numberEP 94301523
Classification (CPC)H01J61/20

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedMarch 2, 1994PublishedSep 6, 1995Patent grantedMay 14, 1997Term endedMarch 2, 2014

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.