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Expired European patentEurope

Apparatus and method for starting high intensity discharge lamps

EP 0049465 B1 · Applicant: GTE Laboratories Incorporated

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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 September 29, 1981 and granted April 16, 1986. A European patent lasts at most 20 years from filing, so its term ended September 29, 2001.
  • 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 March 29, 2007.
  • 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.
FiledSeptember 29, 1981
PublishedApril 14, 1982
GrantedApril 16, 1986
Term endedSeptember 29, 2001
Application numberEP 81107749
Classification (CPC)H05B41/04 +1 more

Timeline

Timeline From EPO dates

1982198419861988199019921994199619982000Application filedSep 29, 1981PublishedApril 14, 1982Patent grantedApril 16, 1986Term endedSep 29, 2001

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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