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Expired European patentEurope

Section stainless steel having good image clarity

EP 0581210 B1 · Applicant: AICHI STEEL WORKS, 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 July 23, 1993 and granted October 2, 1996. A European patent lasts at most 20 years from filing, so its term ended July 23, 2013.
  • 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 23, 2019.
  • 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 23, 1993
PublishedFebruary 2, 1994
GrantedOctober 2, 1996
Term endedJuly 23, 2013
Application numberEP 93111822
Classification (CPC)C25F3/24

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedJuly 23, 1993PublishedFeb 2, 1994Patent grantedOct 2, 1996Term endedJuly 23, 2013

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.