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Expired European patentEurope

Electronically commutated D.C. motor

EP 0129049 B1 · Applicant: Alcatel SEL 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 May 12, 1984 and granted July 27, 1988. A European patent lasts at most 20 years from filing, so its term ended May 12, 2004.
  • 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 November 12, 2009.
  • 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.
FiledMay 12, 1984
PublishedDecember 27, 1984
GrantedJuly 27, 1988
Term endedMay 12, 2004
Application numberEP 84105411
Classification (CPC)H02K5/173

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedMay 12, 1984PublishedDec 27, 1984Patent grantedJuly 27, 1988Term endedMay 12, 2004

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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