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Expired European patentEurope

Method of three-dimensional NMR imaging using selective excitation

EP 0091008 B1 · Applicant: GENERAL ELECTRIC COMPANY

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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 23, 1983 and granted September 23, 1987. A European patent lasts at most 20 years from filing, so its term ended March 23, 2003.
  • 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 23, 2008.
  • 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 23, 1983
PublishedOctober 12, 1983
GrantedSeptember 23, 1987
Term endedMarch 23, 2003
Application numberEP 83102875
Classification (CPC)G01R33/4822

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedMarch 23, 1983PublishedOct 12, 1983Patent grantedSep 23, 1987Term endedMarch 23, 2003

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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