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Expired European patentEurope

A method for manufacturing and reinforcing a catalytic unit intended for purifying exhaust gases

EP 0243952 B1 · Applicant: KEMIRA OY

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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 April 29, 1987 and granted October 11, 1989. A European patent lasts at most 20 years from filing, so its term ended April 29, 2007.
  • 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 October 29, 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.
FiledApril 29, 1987
PublishedNovember 4, 1987
GrantedOctober 11, 1989
Term endedApril 29, 2007
Application numberEP 87106249
Classification (CPC)B01J35/56 +1 more

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedApril 29, 1987PublishedNov 4, 1987Patent grantedOct 11, 1989Term endedApril 29, 2007

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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