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Expired European patentEurope

Solid-state wavefront slope determination

EP 0247067 B1 · Applicant: Hughes Aircraft Company

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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 19, 1986 and granted March 11, 1992. A European patent lasts at most 20 years from filing, so its term ended September 19, 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 March 19, 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.
FiledSeptember 19, 1986
PublishedDecember 2, 1987
GrantedMarch 11, 1992
Term endedSeptember 19, 2006
Application numberEP 86906116
Classification (CPC)G01J9/00

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedSep 19, 1986PublishedDec 2, 1987Patent grantedMarch 11, 1992Term endedSep 19, 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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