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Expired European patentEurope

A method of motion compensation in synthetic aperture radar target imaging and a system for performing the method

EP 0229772 B1 · Applicant: FORSVARETS FORSKNINGSTJENESTE

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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 June 16, 1986 and granted April 10, 1991. A European patent lasts at most 20 years from filing, so its term ended June 16, 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 December 16, 2011.
  • 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.
FiledJune 16, 1986
PublishedJuly 29, 1987
GrantedApril 10, 1991
Term endedJune 16, 2006
Application numberEP 86903281
Classification (CPC)G01S13/9019

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedJune 16, 1986PublishedJuly 29, 1987Patent grantedApril 10, 1991Term endedJune 16, 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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