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Expired European patentEurope

Process and system for the compensation of magnetic-interference fields in a vehicle

EP 0237806 B1 · Applicant: SIEMENS AKTIENGESELLSCHAFT

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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 16, 1987 and granted December 20, 1989. A European patent lasts at most 20 years from filing, so its term ended February 16, 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 August 16, 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.
FiledFebruary 16, 1987
PublishedSeptember 23, 1987
GrantedDecember 20, 1989
Term endedFebruary 16, 2007
Application numberEP 87102151
Classification (CPC)G01C17/38

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedFeb 16, 1987PublishedSep 23, 1987Patent grantedDec 20, 1989Term endedFeb 16, 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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