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Expired European patentEurope

Abnormality detection device for speed change system

EP 0474865 B1 · Applicant: KABUSHIKI KAISHA KOMATSU SEISAKUSHO

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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 20, 1990 and granted May 14, 1997. A European patent lasts at most 20 years from filing, so its term ended March 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 September 20, 2015.
  • 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 20, 1990
PublishedMarch 18, 1992
GrantedMay 14, 1997
Term endedMarch 20, 2010
Application numberEP 90904698
Classification (CPC)F16H61/12

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedMarch 20, 1990PublishedMarch 18, 1992Patent grantedMay 14, 1997Term endedMarch 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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