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Expired European patentEurope

Circuit for generating brake pulses

EP 0241561 B1 · Applicant: SANYO ELECTRIC CO., LTD.

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Overview

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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 October 13, 1986 and granted August 19, 1992. A European patent lasts at most 20 years from filing, so its term ended October 13, 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 April 13, 2012.
  • 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.
FiledOctober 13, 1986
PublishedOctober 21, 1987
GrantedAugust 19, 1992
Term endedOctober 13, 2006
Application numberEP 86905942
Classification (CPC)G11B15/48 +2 more

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedOct 13, 1986PublishedOct 21, 1987Patent grantedAug 19, 1992Term endedOct 13, 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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