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Expired European patentEurope

Helmet wth two-way radio communication faculty

EP 0237290 B1 · Applicant: NGK INSULATORS, LTD.

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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 6, 1987 and granted October 31, 1990. A European patent lasts at most 20 years from filing, so its term ended March 6, 2007.
  • 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 6, 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.
FiledMarch 6, 1987
PublishedSeptember 16, 1987
GrantedOctober 31, 1990
Term endedMarch 6, 2007
Application numberEP 87301951
Classification (CPC)A42B3/30 +1 more

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedMarch 6, 1987PublishedSep 16, 1987Patent grantedOct 31, 1990Term endedMarch 6, 2007

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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