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Expired European patentEurope

Magnetic induction method and magnetic circuit of rotator for generating mechanical and electric power

EP 0509993 B1 · Applicant: BAE, Youn Soo

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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 July 20, 1990 and granted March 15, 1995. A European patent lasts at most 20 years from filing, so its term ended July 20, 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 January 20, 2016.
  • 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.
FiledJuly 20, 1990
PublishedOctober 28, 1992
GrantedMarch 15, 1995
Term endedJuly 20, 2010
Application numberEP 90911445
Classification (CPC)H02K99/00 +1 more

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedJuly 20, 1990PublishedOct 28, 1992Patent grantedMarch 15, 1995Term endedJuly 20, 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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