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Expired European patentEurope

A method of sensing and indicating errors in a dosing circuit

EP 0248073 B1 · Applicant: ALFA-LAVAL SEPARATION AB

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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 December 12, 1986 and granted June 14, 1989. A European patent lasts at most 20 years from filing, so its term ended December 12, 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 June 12, 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.
FiledDecember 12, 1986
PublishedDecember 9, 1987
GrantedJune 14, 1989
Term endedDecember 12, 2006
Application numberEP 87900322
Classification (CPC)F16N29/04

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedDec 12, 1986PublishedDec 9, 1987Patent grantedJune 14, 1989Term endedDec 12, 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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