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Expired European patentEurope

Apparatus and method for detection of overlapping objects

EP 0028056 B1 · Applicant: NCR CANADA LTD - NCR CANADA LTEE

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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 30, 1980 and granted September 28, 1983. A European patent lasts at most 20 years from filing, so its term ended July 30, 2000.
  • 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 30, 2006.
  • 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 30, 1980
PublishedMay 6, 1981
GrantedSeptember 28, 1983
Term endedJuly 30, 2000
Application numberEP 80302597
Classification (CPC)B65H7/125

Timeline

Timeline From EPO dates

1981198319851987198919911993199519971999Application filedJuly 30, 1980PublishedMay 6, 1981Patent grantedSep 28, 1983Term endedJuly 30, 2000

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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