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Expired European patentEurope

Method of autocorrecting a fiber optic gyroscope using a 3x3-coupler

EP 0402565 B1 · Applicant: Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung

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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 February 9, 1990 and granted July 1, 1992. A European patent lasts at most 20 years from filing, so its term ended February 9, 2010.
  • 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 August 9, 2015.
  • 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.
FiledFebruary 9, 1990
PublishedDecember 19, 1990
GrantedJuly 1, 1992
Term endedFebruary 9, 2010
Application numberEP 90102528
Classification (CPC)G01C19/725

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedFeb 9, 1990PublishedDec 19, 1990Patent grantedJuly 1, 1992Term endedFeb 9, 2010

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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