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Expired European patentEurope

A second harmonic wave-generation device

EP 0962809 B1 · Applicant: NGK INSULATORS, 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 May 10, 1999 and granted March 30, 2005. A European patent lasts at most 20 years from filing, so its term ended May 10, 2019.
  • 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 November 10, 2024.
  • 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.
FiledMay 10, 1999
PublishedDecember 8, 1999
GrantedMarch 30, 2005
Term endedMay 10, 2019
Application numberEP 99303612
Classification (CPC)G02F1/377

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedMay 10, 1999PublishedDec 8, 1999Patent grantedMarch 30, 2005Term endedMay 10, 2019

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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